Home page of the microscope service parts, repair and spare parts online catalog - Sermik-Oplatek Mikroskopservice Dresden f.n.n.Z

Description of this part for the microscope.

covers that close the internal interpupillary distance adjustment mechanism from the front (https://www.microscopeparts.eu/part/99929). The second, right cover is shaped differently and is a separate item (https://www.microscopeparts.eu/part/99931).

The interpupillary scale is printed on the left cover - there is no printing on the right cover. When the interpupillary distance is changed, the right cover covers or uncovers part of the left cover and with it part of the scale placed there - and this is how the interpupillary distance value is read.

The cover is made of plastic and is screwed with four screws directly to the brass carrier plate, to which the eyepiece tube (https://www.microscopeparts.eu/part/99928) is also fastened.

This cover was removed from the Leitz Wetzlar binocular head P/N 512821/20 (also written 512 821) - but exactly the same one is used in other models of binocular and trinocular heads as well.

The same front panel design is found in, among others, the Leitz 512 923/20 and Leitz 512 815 trinocular heads - this cover will most likely fit those too.

Before you decide to use this cover in a Leitz Wetzlar head other than model 512 821/20, first compare the exact dimensions (the photos show a millimetre scale), and if you have any doubts, ask in internet groups and forums.

This is a service part for a microscope head - not for a specific microscope model. Such a head can be mounted on many Leitz Wetzlar microscope models (and even on microscopes from other makers), so no list of microscopes this cover fits can be given - it fits the head, and the user mounts the head wherever he wants.

In the "compatibility" section I list a few example Leitz Wetzlar microscope models that turn up on the second-hand market complete with the head this cover comes from - but this is definitely not a complete list. They include:
- Leitz Wetzlar Dialux 20 / Dialux 22 EB
- Leitz Wetzlar Laborlux K / Laborlux S
- Leitz Wetzlar Diaplan

On the last photos in the gallery you can see the Leitz Wetzlar 512821/20 binocular head, and with arrows I try to show which part this is and where it sits in the head.

Description of this part for the microscope.

internal interpupillary distance adjustment mechanism from the front (https://www.microscopeparts.eu/part/99929). The second, left cover is shaped differently and is a separate item (https://www.microscopeparts.eu/part/99930).

There is no printing on the right cover - the interpupillary scale is printed on the left cover. When the interpupillary distance is changed, the right cover covers or uncovers part of the left cover and with it part of the scale placed there - and this is how the interpupillary distance value is read.

The cover is made of plastic and is screwed with four screws directly to the brass carrier plate, to which the eyepiece tube (https://www.microscopeparts.eu/part/99928) is also fastened.

This cover was removed from the Leitz Wetzlar binocular head P/N 512821/20 (also written 512 821) - but exactly the same one is used in other models of binocular and trinocular heads as well.

The same front panel design is found in, among others, the Leitz 512 923/20 and Leitz 512 815 trinocular heads - this cover will most likely fit those too.

Before you decide to use this cover in a Leitz Wetzlar head other than model 512 821/20, first compare the exact dimensions (the photos show a millimetre scale), and if you have any doubts, ask in internet groups and forums.

This is a service part for a microscope head - not for a specific microscope model. Such a head can be mounted on many Leitz Wetzlar microscope models (and even on microscopes from other makers), so no list of microscopes this cover fits can be given - it fits the head, and the user mounts the head wherever he wants.

In the "compatibility" section I list a few example Leitz Wetzlar microscope models that turn up on the second-hand market complete with the head this cover comes from - but this is definitely not a complete list. They include:
- Leitz Wetzlar Dialux 20 / Dialux 22 EB
- Leitz Wetzlar Laborlux K / Laborlux S
- Leitz Wetzlar Diaplan

On the last photos in the gallery you can see the Leitz Wetzlar 512821/20 binocular head, and with arrows I try to show which part this is and where it sits in the head.

Description of this part for the microscope.

of:
- two brass carrier plates, each with a round seat for the eyepiece tube (it is to these plates that the tubes https://www.microscopeparts.eu/part/99928 are screwed)
- a central scissor lever made of plastic, with its fixing screw
- two pressure springs (one for each brass plate)

Turning the central lever moves both brass plates outwards symmetrically. It is exactly this constant work of the plastic central lever against the brass plates that wears the plastic lever out - and then it has to be replaced.

This mechanism was removed from the Leitz Wetzlar binocular head P/N 512821/20 (also written 512 821) - but exactly the same one is used in other models of binocular and trinocular heads as well.

The same front panel design is found in, among others, the Leitz 512 923/20 and Leitz 512 815 trinocular heads - this interpupillary mechanism will most likely fit those too.

From the outside this mechanism is covered by plastic covers - one on the right (https://www.microscopeparts.eu/part/99931) and a different one on the left (https://www.microscopeparts.eu/part/99930). These plastic covers carry a printed scale on which the interpupillary distance is read.

Before you decide to use this mechanism in a Leitz Wetzlar head other than model 512 821/20, first compare the exact dimensions (the photos show a millimetre scale), and if you have any doubts, ask in internet groups and forums.

This is a service part for a microscope head - not for a specific microscope model. Such a head can be mounted on many Leitz Wetzlar microscope models (and even on microscopes from other makers), so no list of microscopes this mechanism fits can be given - it fits the head, and the user mounts the head wherever he wants.

In the "compatibility" section I list a few example Leitz Wetzlar microscope models that turn up on the second-hand market complete with the head this mechanism comes from - but this is definitely not a complete list. They include:
- Leitz Wetzlar Dialux 20 / Dialux 22 EB
- Leitz Wetzlar Laborlux K / Laborlux S
- Leitz Wetzlar Diaplan

On the last photos in the gallery you can see the Leitz Wetzlar 512821/20 binocular head, and with arrows I try to show which part this is and where it sits in the head.

Description of this part for the microscope.

Wetzlar binocular head P/N 512821/20 (also written 512 821) - but exactly the same tube is used in other models of binocular and trinocular heads as well.

The same front panel design is found in, among others, the Leitz 512 923/20 and Leitz 512 815 trinocular heads - this tube with diopter adjustment will most likely fit those too.

Diameter of the eyepieces it takes: 23.2 mm.

In the Leitz bino 512821/20 both the left and the right tube have diopter adjustment. They are mechanically identical parts - there is no difference between the left and the right tube. They can be swapped.

Before you decide to use this tube in a Leitz Wetzlar head other than model 512 821/20, first compare the exact dimensions (the photos show a millimetre scale), and if you have any doubts, ask in internet groups and forums.

This is a service part for a microscope head - not for a specific microscope model. Such a head can be mounted on many Leitz Wetzlar microscope models (and even on microscopes from other makers), so no list of microscopes this tube fits can be given - it fits the head, and the user mounts the head wherever he wants.

In the "compatibility" section I list a few example Leitz Wetzlar microscope models that turn up on the second-hand market complete with the head this tube comes from - but this is definitely not a complete list. They include:
- Leitz Wetzlar Dialux 20 / Dialux 22 EB
- Leitz Wetzlar Laborlux K / Laborlux S
- Leitz Wetzlar Diaplan

On the last photos in the gallery you can see the Leitz Wetzlar 512821/20 binocular head taken apart, with an arrow pointing to which part this is and where it sits in the head. That makes it unambiguous to identify.

Description of this part for the microscope.

microscopes have a standardized mount of 38 mm diameter into which various tubes can be fitted. One of exactly these tubes is presented here.

Basic parameters of the tube presented here:
Markings on the housing: "Germany" on one side and "30ø" on the other side
Mounting connection: a plain tube (cylinder). This is not a tube with a thread or a dovetail
Mounting diameter: 38 mm, that is the standard mounting diameter used in Leitz Wetzlar trinocular heads
Internal optics: none - this tube has no optics inside
Internal diameter: the tube has an internal diameter of 30 mm, so that a projection eyepiece of exactly that diameter can be fitted inside

The trinocular heads this tube fits are used among others in the following microscopes:
- Leitz Wetzlar Orthoplan
- Leitz Wetzlar Diaplan
- Leitz Wetzlar Ergolux
- Leitz Wetzlar Dialux
- Leitz Wetzlar Laborlux
- Leitz Wetzlar SM-LUX
- Leitz Wetzlar Ortholux II
- Leitz Wetzlar Aristoplan
- Leitz Wetzlar HM-LUX

This is not a tube for one particular microscope model. A trino head can be mounted not only on the microscope it was sold with, so the correct assumption is that this is a standard tube for Leitz Wetzlar trinocular heads - and those can be used on most microscope models of this company.

The last photo in the gallery shows what this tube looks like with a 30 mm eyepiece fitted.

The "compatibility" section lists example microscopes this tube fits, although the list is not complete.

Description of this part for the microscope.

part of the microscope binocular head - the part into which the eyepiece tubes are screwed.

This mechanism was removed from a Leitz Wetzlar binocular head P/N 512582 - but exactly the same one is also used in other models of binocular and trinocular heads.

Before you use this mechanism (or one of its smaller components) in a Leitz Wetzlar head other than model 512582, first compare the exact dimensions - a millimetre scale is visible in the photos - and if in doubt, ask on internet groups and forums.

Description of this part for the microscope.

This prism was removed from a Leitz Wetzlar binocular head P/N 512582 - but exactly the same one is also used in other models of binocular and trinocular heads.

Right means right as seen by the observer looking into the eyepieces. It is neither the central prism that splits the beam towards both eyes, nor the left eyepiece prism.

The last photo in the gallery shows a disassembled Leitz Wetzlar 512582 binocular head, with an arrow pointing to the prism in question and to its position inside the head. This makes the part easy to identify.

Replacing this prism in a Leitz Wetzlar microscope head can be the remedy for the following problems:
- if the prism in your head is mechanically damaged: it may be cracked or chipped
- if the prism to be replaced has a damaged anti-reflective coating: this may be caused by fungus, or the coating may be scratched by improper cleaning
- if discolouration or separation (delamination) is visible inside the prism. Over the years the cement can discolour or come apart in places, which is unfortunately visible in the field of view while working with the microscope
- if the reflective layer oxidises and loses its properties in places or completely

Before you decide to use this prism in a Leitz Wetzlar head other than model 512582, first compare the exact dimensions (a millimetre scale is visible in the photos) and, if in doubt, ask on internet groups and forums.

Description of this part for the microscope.

This prism was removed from a Leitz Wetzlar binocular head P/N 512582 - but exactly the same one is also used in other models of binocular and trinocular heads.

The last photo in the gallery shows a disassembled Leitz Wetzlar 512582 binocular head, with an arrow pointing to the prism in question and to its position inside the head. This makes the part easy to identify.

Replacing this prism in a Leitz Wetzlar microscope head can be the remedy for the following problems:
- if the prism in your head is mechanically damaged: it may be cracked or chipped
- if the prism to be replaced has a damaged anti-reflective coating: this may be caused by fungus, or the coating may be scratched by improper cleaning
- if discolouration or separation (delamination) is visible inside the prism. Over the years the cement can discolour or come apart in places, which is unfortunately visible in the field of view while working with the microscope
- if the reflective layer oxidises and loses its properties in places or completely

Before you decide to use this prism in a Leitz Wetzlar head other than model 512582, first compare the exact dimensions (a millimetre scale is visible in the photos) and, if in doubt, ask on internet groups and forums.

Description of this part for the microscope.

- but exactly the same prisms are also used in other models of binocular and trinocular heads.

It is neither the right nor the left eyepiece prism. It is the central prism that splits the beam towards the right and the left eye.

The last photo in the gallery shows a disassembled Leitz Wetzlar 512582 binocular head, with an arrow pointing to the prism in question and to its position inside the head. This makes the part easy to identify.

Replacing this prism in a Leitz Wetzlar microscope head can be the remedy for the following problems:
- if the prism in your head is mechanically damaged: it may be cracked or chipped
- if the prism to be replaced has a damaged anti-reflective coating: this may be caused by fungus, or the coating may be scratched by improper cleaning
- if discolouration or separation (delamination) is visible inside the prism. This is a cemented prism, and over the years the cement can discolour or come apart in places, which is unfortunately visible in the field of view while working with the microscope
- if the reflective layer inside the prism (usually silver) oxidises and loses its properties in places or completely

Before you decide to use this prism in a Leitz Wetzlar head other than model 512582, first compare the exact dimensions (a millimetre scale is visible in the photos) and, if in doubt, ask on internet groups and forums.

Description of this part for the microscope.

binocular head P/N 512582 - but tubes with exactly the same dimensions and the same mounting method are also used in other models of binocular and trinocular heads.

Two such tubes are fitted in binocular and trinocular heads - they are universal, there is no difference between the right and the left one.

The last photos in the gallery show how these tubes are screwed to the front plate of the head. The mounting screws are included with the tube offered here.

This component is often dented, and then the eyepiece can no longer be inserted. Slight deformations can easily be bent back, or the tube can be reamed out from the inside - with more serious deformations this is unfortunately not so easy. In that case, instead of replacing the whole head, it is enough to replace the eyepiece tube alone.

Description of this part for the microscope.

4x
Kind: projection eyepiece for photomicrography
Intended for: microscopes corrected for objectives with TL = 170 mm
Mounting diameter: 23.2 mm

Projection eyepieces are special microscope eyepieces used to project the microscopic image onto the sensor of a camera. Many microscope photo tubes and trinocular heads have a seat for a projection eyepiece.

Leitz projection eyepieces of this magnification carry several different markings. You will find "Proj.-Ok. H4x", "Proj.-Ok. P4X" and - as on the item offered here - simply "Proj. 4x". The letter H stands for the Huygens design. Leitz also made projection eyepieces of other magnifications, 2.5x among them, so the 4x version is not the only one in this family.

The eyepiece is intended for microscopes with a mechanical tube length of 170 mm. The older Leitz stands are corrected this way, Orthoplan, Ortholux, SM and SM-D among others. Later microscopes of this brand already work with a 160 mm tube. In Leitz optics of this generation part of the chromatic aberration correction is deliberately moved from the objective to the eyepiece, so matching an eyepiece to an objective is not merely a mechanical question here.

Despite its name, this eyepiece behaves differently from a typical projection eyepiece. It does not form a real image at a fixed distance, but projects the image to infinity - exactly like an ordinary viewing eyepiece. This makes it excellent for the afocal method, that is, photographing with a camera that keeps its own lens placed above the eyepiece. Leitz itself built its photographic adapters on precisely this method.

Leitz "Proj." eyepieces also found use outside microscopy. Eyepieces of this family were part of the microprojection attachments for the Leitz Prado and Pradovit projectors, which threw the image of a specimen onto a screen for a whole lecture room. If you are completing such an attachment, this is exactly the part.

Use in a microscope with a 160 mm tube length remains a matter of your own DIY modification. Mechanically the eyepiece fits any 23.2 mm seat, but the intermediate image is then formed in a different place, so focus and image scale will come out differently from what the manufacturer intended. There is, however, a route that gives a beautiful combination: into a microscope of another manufacturer you fit a Leitz Wetzlar objective computed for 170 mm, and this eyepiece above it. The optical path is then entirely Leitz - objective and eyepiece work as they were designed to, and only the stand remains foreign, a PZO or a Carl Zeiss Jena one for instance.

The "compatibility" section lists the microscope models this eyepiece can be used with, but that list is of course not complete. This projection eyepiece can be used with any microscope of any manufacturer, as long as it has a tube or another seat for an eyepiece of 23.2 mm diameter - subject to the difference between 160 and 170 mm tube length (I write about this above).

Description of this part for the microscope.

the manufacturer's 1967 catalog: 519 237 (alternative notation: 519237)
Numerical aperture N.A.: 0.40
Tube length: 170 mm
Parfocal length: 37 mm
Working distance: 3.4 mm
Cover glass: either - the objective works both without and with a cover glass
Immersion: no (dry objective)
Thread: RMS

Because it works without a cover glass and has a high numerical aperture N.A., this objective can be attractive for macro photographers. It allows projection directly onto the camera sensor - without any intermediate optics.

This objective was removed from a Leitz SM microscope, but it fits most Leitz Wetzlar microscopes made before roughly 1980 (SM, SM-D, SM-Lux, Dialux, Ortholux, Orthoplan, etc.).

Some useful information about Leitz Wetzlar objectives with TL=170 mm and 37 mm parfocal length:
- most Leitz microscopes made before roughly 1980 accept objectives for both 160 mm and 170 mm tube length
- many Leitz microscopes accept objectives with both 37 mm and 45 mm parfocal length
- with an 8 mm RMS extension adapter, such an objective gets a parfocal length of 45 mm. Leitz made such adapters under the name "Plezy" - but many users make their own, from metal or on 3D printers

Like a large share of microscope objectives made in Germany in the 1960s and 1970s, this objective has a 37 mm parfocal length and a 170 mm tube length. For this reason it is often used as a replacement objective for other German microscopes, e.g.:
- Steindorff Berlin
- Kremp Wetzlar
- Hertel & Reuss
- Steinmar Berlin
- CBS Beck Kassel
- ROW Rathenow

This objective fits practically any microscope from any manufacturer, as long as it has an RMS thread and accepts objectives with TL=170 mm and a parfocal length of 33 / 37 mm (or 45 mm with a suitable adapter). Some examples of such microscopes are listed in the "compatibility" section, but this list is not complete.

Description of this part for the microscope.

25
Catalogue number in the manufacturer's catalogue: 519754
Numerical aperture N.A.: 0.25
Cover glass: not required
Thread: RMS
Tube length: 160 mm
Parfocal length: 45 mm (so-called long barrel objective)
Immersion: no (dry objective)

This is the so-called "black series" of objectives, named after the black plastic housing of the objective. They were used mainly in Leitz Wetzlar HM-LUX-3 microscopes (and in the model signed Leica HM-LUX 3). This was the period when manufacturers were experimenting with a new look for microscope parts, and exactly the same kind of "black series" could also be found in Will Wetzlar V300 / V355 / V365 or Nikon Alphaphot YS2 microscopes.

From 1990 onwards, the logo (and the name) "Leica" began to appear on microscopes that had until then been signed "Leitz". This was also visible on the HM-LUX 3 microscope - and this microscope can be found both with the "Leitz" logo and with "Leica". The same 10x objective that I present here with the name "Leitz Wetzlar" and manufacturer number 519754 also exists with the "Leica" marking - and NOTE - it carries exactly the same number, that is "519754".

This objective fits practically any microscope from any manufacturer, provided it has an RMS thread and accepts objectives with a tube length of 160 mm and a parfocal length of 33 / 37 or 45 mm. A few such microscopes are listed as examples in the "compatibility" section, but this is not a complete list.

Description of this part for the microscope.

17 100/1.25 Oel
Catalogue number in the manufacturer's catalogue: 519756
Numerical aperture N.A.: 1.25
Cover glass: yes, 0.17 mm
Thread: RMS
Tube length: 160 mm
Parfocal length: 45 mm (so-called long barrel objective)
Immersion: yes, oil

This is the so-called "black series" of objectives, named after the black plastic housing of the objective. They were used mainly in Leitz Wetzlar HM-LUX-3 microscopes (and in the model signed Leica HM-LUX 3). This was the period when manufacturers were experimenting with a new look for microscope parts, and exactly the same kind of "black series" could also be found in Will Wetzlar V300 / V355 / V365 or Nikon Alphaphot YS2 microscopes.

This objective fits practically any microscope from any manufacturer, provided it has an RMS thread and accepts objectives with a tube length of 160 mm and a parfocal length of 33 / 37 or 45 mm. A few such microscopes are listed as examples in the "compatibility" section, but this is not a complete list.

Description of this part for the microscope.

of 45 mm.
- This version of the base can be used with transmitted light, although the light source is not included.
- A microscope stage can be mounted on this base - the required mounting holes are provided.
- The stand is equipped with a worm-thread drive.

This heavy and stable stand is often used for applications completely unrelated to hardness testers or microscopes, for example for mounting drill presses, lasers, or stable macro photography setups.

Description of this part for the microscope.

not intended for so-called "thick" objectives
Thread in the cap: no, the cap of this objective case does not contain a thread for attaching an RMS objective

This objective case can be used to store so-called "short" objectives (DIN 33 mm), longer objectives (DIN 37 mm), and long objectives (DIN 45 mm), provided they are not the so-called "thick" type.

Various names are used on the secondary market for a microscope objective case, including:
- objective case
- microscope objective case
- objective container
- microscope objective container
- objective storage case
- objective storage container
- objective box
- objective storage box
- protective objective case
- objective lens case
- objective lens container
- dust protection case
- transport case for microscope objectives
- microscope objective holder case
- storage canister for microscope objectives

Each case has the Leitz Wetzlar logo on its cap.

Although this case is of greatest interest to users and collectors of objectives made by the manufacturer Leitz Wetzlar, it can of course be used to store objectives from any manufacturer.

Description of this part for the microscope.

allowing precise movement of the specimen in both the X and Y axes of the stage plane. The manipulator consists of two coaxial knobs, two independent drive shafts and the fixing elements that attach it to the stage mechanism.

This particular manipulator was removed from a Leitz Dialux microscope. The last photograph in the gallery shows the entire microscope stage from which it was dismounted. The manufacturer also used the same or very similar stages in many other Leitz Wetzlar microscope models, which is why the manipulator may also be compatible with other models from this company.

On the second-hand market and in service documentation one encounters many names referring to this assembly. The most commonly used terms include, among others:
- stage manipulator
- XY stage manipulator
- mechanical stage drive
- stage control knobs
- specimen mover
- coaxial stage drive
- stage drive assembly
- mechanical stage control
- manual XY stage drive
- stage actuator mechanism

Such manipulators very often suffer mechanical damage during transport of the microscope. Because they protrude beyond the outline of the stand, it is precisely they that absorb the impact energy first - in the event of a fall or improper packaging of the instrument.

In many cases it is not the entire manipulator that is damaged, but only one of its components. Most often these are the knobs, the drive shafts, the coaxial sleeves or the fixing elements. For this reason, this database also contains all the most important constituent parts of this (and other) manipulators, offered separately as service elements.

Damage to the manipulator does not make further work with the microscope impossible. The specimen can be moved by hand, or a simple specimen holder without an XY movement mechanism can be fitted. Such a solution works well at low magnifications; however, when working with objectives of magnifications greater than 40x (e.g. 60x, 63x, 80x or 100x), precise manual movement of the specimen becomes very difficult. At total magnifications exceeding about 400x, even a slight movement of the hand shifts the image by a considerable distance within the field of view. The mechanical manipulator enables very smooth, controlled and repeatable movement of the specimen in both axes, which is particularly important during observation with oil immersion and when producing photographic documentation.

The photographs in the gallery show the exact dimensions of the complete manipulator. The last photograph presents the entire microscope stage together with an arrow indicating the mounting location of this element, which makes it possible to identify the offered part unambiguously.

Description of this part for the microscope.

from a Leitz Dialux microscope. In the last photo in the gallery you can see the microscope stage from which it was removed. However, the manufacturer fitted the same type of mechanical XY microscope stage to many other Leitz microscope models, so this specimen holder is also compatible with models other than the Leitz Dialux.

When determining compatibility and whether this specimen holder can be mounted on a particular mechanical XY microscope stage, the following dimensions are critical:
- distance between the two side locating pins: 81 mm measured from the outer edge of one pin to the outer edge of the other pin
- locating pin diameter: 3 mm each
- therefore, the centre-to-centre distance between the locating pins is 78 mm
- diameter of the central mounting screw: 4 mm
- position of the mounting screw: centred between the two locating pins

If the spacing of the locating pins matches, this specimen holder can also be mounted on microscope stages made by other manufacturers.

Leitz Wetzlar produced specimen holders with fixed stage clips as well as versions with a spring-loaded stage clip. Here I am showing and offering the spring-loaded version.

On the used market and in technical documentation, this microscope part is described using a variety of names. Common terms include:
- specimen holder
- microscope stage specimen holder
- mechanical stage specimen holder
- slide holder
- microscope slide holder
- microscope slide clamp
- spring-loaded specimen holder
- spring-loaded slide holder
- spring-loaded stage clip
- specimen clamp
- specimen carrier
- mechanical stage carrier
- XY stage specimen holder
- specimen holder for mechanical XY microscope stage
- stage holder
- stage clip assembly

The photographs in the gallery show the exact dimensions of the microscope part offered here. In addition, the last photograph includes an arrow indicating exactly which microscope part is being described and where it is mounted on the mechanical XY microscope stage, making identification straightforward. The accompanying video demonstrates the operation of the spring-loaded stage clip.

Description of this part for the microscope.

Wetzlar
Model: 160/0,17 EF 100/1.25 OEL PHACO 3
Magnification: 100x
Correction: semi-plan achromat
Numerical aperture: 1.25
Tube length: 160 mm
Focal length: 45 mm
Cover glass: yes, 0.17 mm
Immersion: yes, oil
Thread: RMS
Specimen protection: yes - spring-loaded
Info: PHACO 3 = phase contrast

Some important information about this objective:
- the designation "EF" means "Extended Field" - this is a semi-plan achromatic objective with an 18 mm field of view, which should be taken into account when selecting suitable eyepieces
- the semi-plan achromatic correction is "almost flat" - it is no longer an achromat, but not yet a plan achromat
- this objective can be used in brightfield, but phase contrast operation requires a compatible phase contrast condenser or a slide (slider) with a phase ring diaphragm
- the designation PHACO 3 means that for phase contrast operation a phase contrast condenser set to ring "3" should be used (the equivalent setting used by Zeiss is called "Ph3")
- this objective can be used with microscopes designed for objectives with a 170 mm tube length, but in such a case the optical path must be extended by 10 mm - most commonly by pulling the eyepieces out of the tubes by 10 mm

This objective can be used with any microscope from any manufacturer together with a compatible phase contrast condenser. Naturally, the microscope must be compatible, i.e. it must support RMS objectives, TL=160 mm and FL=45 mm - or have adapters that make such adaptation possible (for example thread adapters).

Description of this part for the microscope.

of 39.5 mm for mounting the condenser
- a condenser height adjustment knob
- a rack gear

This component fits various versions of the Leitz Wetzlar SM microscope:
- Leitz SM
- Leitz SM-D
- Leitz SM-Pol

Description of this part for the microscope.

transmitted light work
Mounting method: this stage is attached to the microscope body using screws
Centering: in the Leitz Wetzlar SM-Pol microscope, this stage is centered using two screws

Many users of the Leitz Wetzlar SM microscope (or SM-D) ask the following question:
- Can I install the polarizing stage from the Leitz SM-Pol microscope into a Leitz SM microscope and thus convert it into a polarizing microscope?
- The answer is: No. The centering mechanism of this polarizing stage means that this stage is not compatible with the non-polarizing Leitz SM microscope. Moreover, the Leitz SM microscope differs from the polarizing SM-Pol model not only in the stage.

In the last photo, an arrow indicates which element is being offered and where it is located in the microscope, allowing this part to be identified unambiguously. Additionally, the attached video shows the movement mechanism of this stage.

Description of this part for the microscope.

type: RMS
Centering: yes, each objective can be centered independently (a special key / tool is required)
Mounting method: the nosepiece is attached to the microscope body using screws

In the last photo, an arrow indicates which element is being offered and where it is located in the microscope, allowing this part to be identified unambiguously. Additionally, the attached video shows the movement mechanism of this nosepiece.

Description of this part for the microscope.

at the end of the microscope arm and performs several functions:
- a microscope head is mounted on its top side (monocular, binocular or trinocular photographic head)
- inside there is a slide containing a polarizing analyzer that can be moved out of the optical path using a switch
- a polarizing objective nosepiece is mounted to the underside of this component

In the last photo, an arrow indicates which component is being offered and where it is located in the microscope, making it possible to identify this part unambiguously. In addition, the attached video shows the mechanism responsible for moving the polarization analyzer.

Description of this part for the microscope.

bright field
- dark field
- oblique illumination
- phase contrast

It can work with phase objectives of different magnifications and from different manufacturers (it is sufficient to manually adjust the ring diameter).

Basic parameters:
Manufacturer: Leitz Wetzlar
Model: Heine condenser
Mounting diameter: 39.5 mm
Numerical aperture N.A.: variable, up to 1.4

This Heine condenser was designed for microscopes with a condenser holder in the form of a circular clamp (e.g. Leitz SM microscopes). It is not a condenser that slides into mounting rails (as found, for example, in the Leitz Orthoplan microscope).

This condenser fits microscopes from many manufacturers (e.g. PZO, Steindorff Berlin, Zeiss, Carl Zeiss Jena, Leitz, Kremp Wetzlar, Will Wetzlar and many others) equipped with a 39.5 mm condenser holder.

Description of this part for the microscope.

microscope. The head contains a built-in Bertrand lens that can be moved out of the optical path. This allows both standard orthoscopic and conoscopic observations to be performed.

Basic parameters:
Manufacturer: Leitz Wetzlar
Compatible eyepiece diameter: 30 mm
Compatible eyepiece type: both standard eyepieces and polarizing eyepieces with a positioning key
Bertrand lens: yes, with an adjustment knob
Compatible with: Leitz Wetzlar SM-Pol microscope

Important: the non-polarizing versions of the Leitz Wetzlar SM microscope (and the SM-D) use a different head mounting system, therefore this head is not compatible with those models.

In the last photograph, an arrow indicates exactly which component is being offered and where it is located within the microscope, allowing this part to be identified unambiguously. In addition, the attached video shows, among other things, the mechanism used to move the Bertrand lens.

Description of this part for the microscope.

guide rails of the condenser holder. It is not a condenser mounted in a circular clamp, therefore it does not have a "diameter" parameter describing it.

This condenser was removed from a Leitz Wetzlar Dialux microscope (the first black model), but to the best of my knowledge it also fits other microscopes from the same era: Leitz Ortholux and Leitz Orthoplan. Important - it does not fit Leitz SM microscopes.

The upper flip-out lens provides the best image quality when working with objectives of high numerical aperture (N.A.). When the upper lens is flipped out, optimal illumination is achieved when using objectives with magnifications below 10x.

Description of this part for the microscope.

170 mm
Focal length: 37 mm
Cover glass: yes, 0.17 mm
Immersion: no
Thread: RMS

This objective was removed from a Leitz Dialux microscope, but it is compatible with most Leitz Wetzlar microscopes manufactured approximately before 1980 (SM, SM-Lux, Dialux, Ortholux, Orthoplan, etc.).

Some useful information about Leitz Wetzlar objectives with TL=170 mm and FL=37 mm:
- most Leitz microscopes manufactured approximately before 1980 support both 160 mm and 170 mm tube length objectives
- many Leitz microscopes support both 37 mm and 45 mm parfocal length objectives
- by adding an RMS-8mm adapter, such an objective obtains a parfocal length of 45 mm. Leitz manufactured such adapters under the name "Plezzy" - however, many users make their own versions from metal or by using 3D printers

Description of this part for the microscope.

objective nosepiece. It can hold, for example, fluorescence barrier filters, a polarization analyzer, a neutral density filter, or a custom DIY project.

Basic parameters:
Slider width: 20 mm
Slider thickness: 4 mm
Number of filter positions: 2
Filter diameter: 19 mm

A slider with a filter holder of these dimensions fits the following microscope models:
- Leitz Dialux II
- Leitz Ortholux II
Note that these are models marked with "II" and not the older black Leitz Dialux and Leitz Ortholux microscopes. It is also not compatible with Leitz Orthoplan microscopes, which require sliders with a width of 30 mm.

This slider is empty - it does not contain any filters and can be configured as desired.

Description of this part for the microscope.

Lichteinstellupe (Centering / Focus telescope)
Mounting diameter: 23.2 mm + original 30 mm adapter

This centering telescope can be used for:
- DIC alignment (Differential Interference Contrast)
- Phase contrast alignment (centering phase rings)
- Aperture diaphragm inspection (iris diaphragm observation)Filament centering when setting up Köhler illumination

This is one of those microscope elements for which many different names are used. Among others:
- phase telescope
- phase contrast telescope
- phase alignment telescope
- phase adjustment telescope
- phase centering telescope
- phase contrast centering telescope
- phase contrast alignment telescope
- phase contrast adjustment telescope
- centering telescope
- condenser centering telescope
- condenser alignment telescope
- condenser adjustment telescope
- alignment telescope
- adjustment telescope
- inspection telescope
- aperture viewing telescope
- back focal plane viewing telescope
- auxiliary microscope
- phase contrast auxiliary microscope
- alignment auxiliary microscope
- centering auxiliary microscope
- adjustment auxiliary microscope
- auxiliary telescope
- centering scope
- alignment scope
- phase scope
- phase viewer
- phase contrast viewer
- phase centering eyepiece
- phase contrast eyepiece
- phase alignment eyepiece
- phase telescope eyepiece
- centering eyepiece
- condenser centering eyepiece
- adjustment eyepiece
- inspection eyepiece

Description of this part for the microscope.

for precise framing and field-of-view limiting in photomicrography.

The eyepiece fits any microscope from any manufacturer. It can be used with either transmitted or reflected light microscopes, as long as the eyepiece mounting diameter on the microscope head is 30 mm.

Manufacturer: Leitz Wetzlar (Leica)
Model: Periplan GW 10x M F
Magnification: 10x
Image: photo frame graticule
Mounting diameter: 30 mm

The eyepiece features diopter adjustment and image sharpness adjustment on a micrometer slide.

Description of this part for the microscope.

reflected light microscopes, as long as the eyepiece mounting diameter on the microscope head is 30 mm.

Manufacturer: Leitz Wetzlar (Leica)
Model: Periplan GW 10x M
Magnification: 10x
Image: micrometer
Mounting diameter: 30 mm

The eyepiece features diopter adjustment and image sharpness adjustment on a micrometer slide.

Description of this part for the microscope.

8x
- lens mount marked: 0.8x 419610 (font characteristic for the Wild company. Number 419610 is the manufacturer catalog number)
- field widening lens: 0.8x MPS 195182 (number 195182 is the catalog number of this lens)
- Wild Leitz / Wild MPS 52 photo tube (Heerbrugg Switzerland) with connector for the MPS 46 control console (important - the console is not included)

The mounting diameter on the microscope side is 40 mm.

This tube is currently commonly used for connecting digital cameras or photographic cameras to microscopes with a trinocular head. There is a lot of information about this online as well as DIY step-by-step guides on internet forums. It allows taking microscope photographs and, after minor modifications, it can also be used for macrophotography https://www.mikroskopia.de/serv-mps52-en.html.

Please note that the MPS 52 was sold during a period of ownership and manufacturer name changes. Leitz Wetzlar changed its name to "Leica", and Leica later acquired Wild Heerbrugg. Because of this, the following names are used interchangeably for the entire MPS 52 system:
- Wild MPS 52
- Leitz MPS 52
- Leica MPS 52
This is also visible on the element shown in the photographs:
- the adapter for Polaroid film backs is marked as Wild Heerbrugg
- while the tube itself carries the "Wild Leitz" logo

Description of this part for the microscope.

It transfers the light beam from the illuminator, properly focuses it using lenses and then reflects it vertically upwards using an angle mirror. This microscope element carries the manufacturer part number Leitz Wetzlar 020-452.010-025.

This part may solve the following problems that can occur in the Leitz Dialux 20 microscope:
- if artifacts in the form of lines are visible in the microscope image - this may indicate a crack in the light-collimating lens caused by high temperature emitted by the illuminator
- if the light-reflecting mirror is damaged: scratched, chipped, cracked or if the silver coating has oxidized

Description of this part for the microscope.

is part of the component shown in the Leitz Dialux 20 microscope manual under number 18, which corresponds to the field diaphragm assembly. This page from the manual can be found in the image gallery.

The field diaphragm of the Leitz Dialux 20 microscope consists of:
- lens
- iris diaphragm
and is screwed to the microscope base (stativ foot) directly below the condenser.
The item offered here is exactly this lens.

This lens performs several functions:
- it collimates the light beam
- it protects the iris diaphragm from contamination
- it also serves as a filter holder for inserting filters

It is worth noting that this element may also be compatible with many other Leitz Wetzlar microscope models.

Description of this part for the microscope.

65
Leitz P/N: 519759
Magnification: 40x
Numerical aperture: 0.65
Cover glass: yes, 0.17 mm
Thread: RMS
Tube length: 160 mm
Focal length: 45 mm
Immersion: no (dry, air)
Info: phase contrast PHACO 2

The same objective model was also sold under the name "Leica" instead of "Leitz" on the housing, so these are in fact identical objectives. This objective also fits Will Wetzlar microscopes.

Description of this part for the microscope.

diaphragm
- potentiometer for light intensity control
- transformer integrated into the base

Description of this part for the microscope.

with fluorescent illumination and a Ploemopak turret.

Description of this part for the microscope.

net/docs/leitz/Leitz100-100z.pdf

Description of this part for the microscope.

mm
Cover glass: no
Immersion: no
Thread: RMS

Some information:
- Leitz objectives with a 170 mm tube are also very often used in Leitz microscope models designed for 160 mm tube objectives.
- Many other German manufacturers also produced microscopes with a TL=170 mm, and this objective can be used in them.
- Objectives with a parfocal length of 45 mm can also be used in microscopes that currently use 37 mm objectives.

Description of this part for the microscope.

45 mm
Cover glass: 0,17 mm
Immersion: no
Thread: RMS

Some information:
- Leitz objectives with a 170 mm tube are also very often used in Leitz microscope models designed for 160 mm tube objectives.
- Many other German manufacturers also produced microscopes with a TL=170 mm, and this objective can be used in them.
- Objectives with a parfocal length of 45 mm can also be used in microscopes that currently use 37 mm objectives.

Description of this part for the microscope.

mm
Cover glass: 0,17 mm
Immersion: no
Thread: RMS

Some information:
- Leitz objectives with a 170 mm tube are also very often used in Leitz microscope models designed for 160 mm tube objectives.
- Many other German manufacturers also produced microscopes with a TL=170 mm, and this objective can be used in them.
- Objectives with a parfocal length of 45 mm can also be used in microscopes that currently use 37 mm objectives.

Description of this part for the microscope.

Wetzlar Aristomet and probably other models with EPI illumination

Description of this part for the microscope.

comparison reticle
Microscope: Leitz Wetzlar Aristomet and probably other models with EPI illumination

Description of this part for the microscope.

line
Microscope: Leitz Wetzlar Aristomet and probably other models with EPI illumination

Description of this part for the microscope.

a length of 100 um
Microscope: Leitz Wetzlar Aristomet and probably other models with EPI illumination

Description of this part for the microscope.

length of 200 um
Microscope: Leitz Wetzlar Aristomet and probably other models with EPI illumination

Description of this part for the microscope.

a length of 400 um
Microscope: Leitz Wetzlar Aristomet and probably other models with EPI illumination

Description of this part for the microscope.

has a 20 mm thread.

Element: upper lens of a microscope condenser
Manufacturer: Leitz Wetzlar (Leica)
Model: 0,90 As
Thread diameter: 20 mm
Immersion: no - this is a dry upper lens

Description of this part for the microscope.

compatible with microscopes designed for a 45 mm parfocal standard It is mounted between the objective and the nosepiece/revolver so that optical focus is maintained despite the additional mechanical extension.

Leitz PLEZY differs from extension adapters available on the market in that it features internal anti-reflective optics, ensuring that despite the mechanical extension of the focal length the image quality is not degraded.

Description of this part for the microscope.

dozens of fluorescence illuminator models. Many of them use the same type of lamp holder, but not all. Unfortunately, the catalog number of the illuminator to which this holder fits is unknown.

Description of this part for the microscope.

This element is in perfect condition and shows no signs of use.

Note - this is not a flat slide like most "sliders". It is a cube (in German "Würfel") with a knob for rotating the polarizer and mirrors inside.

Description of this part for the microscope.

in which all components are made of metal. In later years, Leitz produced microscopes of the SM series with plastic elements in the head holding mechanism.

It is a complex mechanism with a spring, locking pawls and moving parts. A very interesting design.

Most likely compatible with many variants of the "SM" model. Attention - the SM-Pol model has a different head holder.

Description of this part for the microscope.

Description of this part for the microscope.

This block is from the model with black plastic knobs. In contrast, the SM-D version has metal knobs (link).

Description of this part for the microscope.

microscope here.

- Ploemopak
- Revolver for four RMS objectives
- Carousel with excitation filters
- Built-in barrier filter cubes in the turret
- Built-in iris diaphragm (*)
- Mounting adapter for the arm

(*) The iris diaphragm opens and closes nicely, but when I look at it, I'm not entirely sure if it's assembled correctly. However, it works very well.

All filters and mirrors are functional, with no delamination.

Description of this part for the microscope.

chromat
Numerical Aperture: 1.30
Tube Length: 170 mm
Focal Length: 37 mm
Cover Glass: Yes, 0.17 mm
Immersion: Yes, oil
Thread: RMS

Description of this part for the microscope.

is still in a liquid state.

Of course, the oil is usable, but I think this item has more collector's value.

Description of this part for the microscope.

RMS
Tubus length: 160 mm
Focal length: 45 mm
Immersion: no (dry, air)
Info: PHACO1 Phase Contrast

Description of this part for the microscope.

Description of this part for the microscope.

correction: achromat
Numerical aperture: 0.10
Tube length: 170 mm
Focal length: 37 mm
Cover glass: no
Immersion: no
Thread: RMS

Description of this part for the microscope.

correction: achromat
Numerical aperture: 0.25
Tube length: 170 mm
Focal length: 37 mm
Cover glass: no
Immersion: no
Thread: RMS

Description of this part for the microscope.

correction: achromat
Numerical aperture: 0.65
Tube length: 170 mm
Focal length: 37 mm
Cover glass: 0,17 mm
Immersion: no
Thread: RMS

Description of this part for the microscope.

25
Magnification: 10x
Color correction: achromat
Numerical aperture: 0.25
Tube length: 170 mm
Focal length: 37 mm
Cover glass: no
Immersion: no
Thread: RMS

Description of this part for the microscope.

Leitz Wetzlar (Leica)
Magnification: 4x
Model: EF4/0.12P 160/- 559212
Color correction: Plan Achromat
Field of view: 18 mm
Numerical aperture: 0.12
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS
Info: EF = Ebenes Feld (plan field)
Info: P = Polarizing (stain-free lens with anti-reflective coating)
Leitz P/N: 559212

This lens provides an excellent, wide image, and because it doesn't require a cover glass, it's often used for super-macro photography and stacking.

Of course, the "P" designation doesn't mean it's designed "solely" for polarizing. It can be used in any microscope for both polarization, brightfield, transmitted light and reflected EPI.

Description of this part for the microscope.

Leitz Wetzlar (Leica)
Magnification: 10x
Model: EF 10/0.25 P 160/- 559213
Color correction: Plan Achromat
Field of view: 18 mm
Numerical aperture: 0.25
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS
Info: EF = Ebenes Feld (plan field)
Info: P = Polarizing (stain-free lens with anti-reflective coating)
Leitz P/N: 559213

This lens provides an excellent, wide image, and because it doesn't require a cover glass, it's often used for super-macro photography and stacking.

Of course, the "P" designation doesn't mean it's designed "solely" for polarizing. It can be used in any microscope for both polarization, brightfield, transmitted light and reflected EPI.

Description of this part for the microscope.

Description of this part for the microscope.

between models. Some (older) objective lens versions are similar to the one in my offer, while others are black-housing (but internally identical). However, they can be interchanged between models.

Description of this part for the microscope.

polarizing
- iris diaphragms

Often compatible with microscopes from other manufacturers.

Description of this part for the microscope.

attached, it has a magnification of 10x. The description on the objective lens says "35 u. 100x," meaning "35x and 100x," as this indicates the magnification of the entire microscope with the default 10x eyepiece.

Manufacturer: Ernst Leitz Wetzlar
Magnifications: 3.5x and 10x
Thread: RMS
Tube length: (?) 170 mm (?)
Focal length: (?) 37 mm (?)

Description of this part for the microscope.

Trichinenmikroskop
Mirror diameter: 40 mm
Shaft diameter: 6 mm
Number of sides: 1

In the first half of the 20th century, many German microscope manufacturers used similar mirrors. Many manufacturers ordered their microscopes from the Ernst Leitz Wetzlar factory and simply engraved their names, so this mirror will undoubtedly match other microscopes of the period.

Description of this part for the microscope.

Pol model has a different head holder.

This is a rather complex mechanism, consisting of a spring, moving plastic parts, and an opening handle. The spring can break or frequently get lost, plastic parts can break, and the main handle often breaks or bends during transport due to poor microscope protection.

Description of this part for the microscope.

Description of this part for the microscope.

Description of this part for the microscope.

Description of this part for the microscope.

one of which has a scale. As far as I know, this block is compatible with other SM models, even those with black plastic knobs, and they can be interchanged.

Description of this part for the microscope.

100x
Numerical Aperture: 1,30
Tubus: 170 mm
Immersion: yes, oil
Thread: RMS
Material: Brass

Description of this part for the microscope.

moving plastic parts, and an opening handle. The spring can break or frequently get lost, plastic parts can break, and the main handle often breaks or bends during transport due to poor microscope protection.