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Description of this part for the microscope.

50x
Thread: RMS
Tube length: 170 mm (?)
Focal length: 37 mm

At that time (most likely in the 1960s) the objectives mounted in microscopes from different manufacturers looked very similar. Many microscope manufacturers ordered objectives from large optics manufacturers (e.g. Leitz Wetzlar) and then only engraved their own names on them. Compare this objective with another one which in the database has number 00618).
Because of this, these objectives can be used with microscopes from many other manufacturers.

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.

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: 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.

40
Magnification: 20x
Correction: Achromat
Numerical Aperture: 0.40
Tube Length: 170 mm
Focal Length: 37 mm
Cover Glass: No
Immersion: No
Thread: RMS

Interestingly, despite its 20x magnification, this microscope objective is marked as requiring no coverslip.

Objective lens of excellent optical quality.

Currently, Kosmos Stuttgart sells plastic educational microscopes for children imported from China.
High-quality optical microscopes were once sold under this brand (or Humboldt), primarily those manufactured at the Hertel & Reuss factory in Kassel.

Description of this part for the microscope.

30
Magnification: 10x
Correction: Achromat
Numerical Aperture: 0.30
Tube Length: 170 mm
Focal Length: 37 mm
Cover Glass: No
Immersion: No
Thread: RMS

Objective lens of excellent optical quality.

Currently, Kosmos Stuttgart sells plastic educational microscopes for children imported from China.
High-quality optical microscopes were once sold under this brand (or Humboldt), primarily those manufactured at the Hertel & Reuss factory in Kassel.

Description of this part for the microscope.

55
Magnification: 30x
Correction: Achromat
Numerical Aperture: 0.55
Tube Length: 170 mm
Focal Length: 37 mm
Cover Glass: No
Immersion: No
Thread: RMS

Interestingly, despite its 30x magnification, this microscope objective is marked as requiring no coverslip.

Objective lens of excellent optical quality.

Currently, Kosmos Stuttgart sells plastic educational microscopes for children imported from China.
High-quality optical microscopes were once sold under this brand (or Humboldt), primarily those manufactured at the Hertel & Reuss factory in Kassel.

Description of this part for the microscope.

85
Magnification: 63x
Correction: Achromat
Numerical Aperture: 0.85
Tube Length: 170 mm
Focal Length: 37 mm
Cover Glass: Yes, 0.17 mm
Immersion: No (dry)
Thread: RMS

Objective lens of excellent optical quality.

Currently, Kosmos Stuttgart sells plastic educational microscopes for children imported from China.
High-quality optical microscopes were once sold under this brand (or Humboldt), primarily those manufactured at the Hertel & Reuss factory in Kassel.

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.

Göttingen
Magnification: 50x
Optical correction: achromat
Numerical aperture N.A.: 0.82
Parfocal length: 37 mm
Tube length: 170 mm
Cover glass: yes, 0.17 mm thick
Immersion: no - this is a dry objective
Thread: RMS

This is a so-called "short barrel" objective with a parfocal length of 37 mm. It is very often mounted on an 8 mm extension, which allows it to be used in microscopes that require 45 mm (long barrel) objectives. Professional adapters with protective optics, metal adapters and popular DIY 3D-printed adapters all work well for this.

The company "Dr. G. Schuchardt Göttingen" did not manufacture microscopes and does not manufacture them today. In the past it mainly sold microscopes made by Hertel & Reuss and Will Wetzlar under its own brand, today its products are imported from China.

This objective fits virtually any microscope from any manufacturer, as long as it has an RMS thread and accepts objectives for TL = 170 mm with a parfocal length of 33 or 37 mm (or 45 mm when a suitable adapter is used). Several example microscopes are listed in the "Compatibility" section, but the list is not complete.

Description of this part for the microscope.

Göttingen
Magnification: 5x
Optical correction: achromat
Numerical aperture N.A.: 0.10
Parfocal length: 37 mm
Tube length: 170 mm
Cover glass: not critical - objectives with such low magnification work both with and without a cover glass
Immersion: no - this is a dry objective
Thread: RMS

This is a so-called "short barrel" objective with a parfocal length of 37 mm. It is very often mounted on an 8 mm extension, which allows it to be used in microscopes that require 45 mm (long barrel) objectives. Professional adapters with protective optics, metal adapters and popular DIY 3D-printed adapters all work well for this.

The company "Dr. G. Schuchardt Göttingen" did not manufacture microscopes and does not manufacture them today. In the past it mainly sold microscopes made by Hertel & Reuss and Will Wetzlar under its own brand, today its products are imported from China.

This objective fits virtually any microscope from any manufacturer, as long as it has an RMS thread and accepts objectives for TL = 170 mm with a parfocal length of 33 or 37 mm (or 45 mm when a suitable adapter is used). Several example microscopes are listed in the "Compatibility" section, but the list is not complete.

Description of this part for the microscope.

achromatic
Numerical aperture N.A.: 0.30
Tube length: 170 mm
Parfocal length: 37 mm
Cover glass: yes, 0.17 mm thick
Immersion: no (dry objective)
Thread: RMS

The Steindorff 10x objective is also suitable for macro photography, as it does not require a cover glass and allows direct projection onto the camera sensor without intermediate optics.

This is a so-called "short objective", with a parfocal length of 37 mm. It is particularly common to mount this objective on an 8 mm extension, which makes it possible to use the objective in microscopes requiring objectives with a parfocal length of 45 mm. Both professional adapters with protective optics and metal adapters, as well as popular DIY solutions made with a 3D printer, work well for this purpose.

Like a large proportion of microscope objectives manufactured in Germany in the 1960s and 1970s, this objective has a parfocal length of 37 mm and a tube length of 170 mm. This means that it is often used as a replacement objective for other German microscopes, such as:
- Leitz Wetzlar
- Kremp Wetzlar
- Hertel & Reuss
- Steinmar Berlin
- CBS Beck Kassel
- ROW Rathenow

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

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.