# Part name:
Will Wetzlar V300 / V365 RMS Oel 100/1.25 160/0.17 100x microscope objective, long barrel 45 mm, achromatic | Hund H600 und Leitz Wetzlar compatible

# Original page URL:
https://www.microscopeparts.eu/part/will-wetzlar-v300-v365-rms-oel-100-1-25-160-0-17-100x-microscope-objective-long-barrel-45-mm-achromatic-hund-91019

# Part manufacturer:
Will Wetzlar

# Full manufacturer name:
Will Wetzlar

# Other names of this manufacturer:
- Wilhelm Will KG, Optisches Werk
- Will-Optik
- Will Leitz GmbH
- Will Wetzlar KG
- Wetzlar Optik (Wetzlar Optik (Will OEM))
These are names commonly used to refer to this manufacturer of microscopes and microscope parts, even if they are not official. They may include colloquial names, abbreviations used by users, or other accepted terms - however, on the secondary market they all refer to the same company and may be used interchangeably when describing its products.

# Belongs to category:
Objective

# Description and specifications:
Achromatic microscope objective by Will Wetzlar, 100x magnification, 45 mm parfocal distance.

Manufacturer: Will Wetzlar
Magnification: 100x
Model: 100/1.25 160/0.17
Numerical aperture N.A.: 1.25
Cover glass: yes, 0.17 mm
Thread: RMS
Tube length: 160 mm
Parfocal distance: 45 mm (so-called long barrel)
Immersion: yes, oil immersion

This objective can be used:
- on biological transmitted light microscopes
- on inverted microscopes
- on microscopes with a reflected light illuminator
- for macro photography, connected directly to a camera

This is the so-called black series of objectives, named after the black plastic objective barrel. They were used mainly in the Will Wetzlar microscopes of the V300 series, for example in the Wilozyt V365 model. This was the period when manufacturers were experimenting with a new look for microscope parts, and exactly the same black series appeared, for example, in the Leitz Wetzlar HM-LUX-3 microscopes.

It is worth noting that the Will Wetzlar microscopes of the V100 and V200 series were usually fitted with objectives of 37 mm parfocal distance - but newer objectives with a parfocal distance of 45 mm, such as those of the black series, can be used in them without any problems whatsoever.

The companies Eschenbach, Kremp Wetzlar, CBS Beck Kassel, Kosmos Stuttgart and Hund Wetzlar also used objectives made by Will Wetzlar, although these often carried their own company name. It can therefore be said with a high degree of confidence that this objective will also fit the microscopes of those companies.

This objective fits practically any microscope of any make, provided it has an RMS thread and accepts objectives with TL=160 mm and parfocal distances of 33 / 37 and 45 mm. A few examples of such microscopes are listed in the "kompatybilność" section, but that list is not exhaustive.

# Examples of use
- if you have a Will Wetzlar microscope without a 100x objective and want to complete it with original parts
- if you are looking for a good-quality 100x objective for a microscope from another manufacturer
- if you already have such an objective, but it is of very poor quality and you want to replace it with a working one
- if you want to keep such objective in reserve

# Removed from microscope:
Will Wetzlar V300

# Also compatible with the following microscopes:
- Will Wetzlar V200
- Will Wetzlar V100
- Will Wetzlar V300
- Will Wetzlar Wilozyt V365
- Leitz HM-LUX 3
- Will Wetzlar BX100
- Will Wetzlar BX200
- Will Wetzlar BX300
- Hund H600
- Hund Fungiscope
- Hund H500
- Hund C300
- Hund S200
- CBS Binocular Model 01
- CBS Binocular Model 02
- CBS Trinokular Model 01
- CBS AS 2
- CBS CBS monocular biological microscope
- Omax M837
- Delta Optical Genetic Pro
- PZO Biolar
- PZO Studar

# Names, descriptions, terms, and search contexts under which this part is searched.
- Will Wetzlar V300 microscope repair parts
- Will Wetzlar V300 / V365 microscope objective
- Hund H600 microscope objective
- Will Wetzlar V300 Mikroskopobjektiv
- Will Wetzlar BX300 Mikroskop Objektiv
- Will Wetzlar V365 Mikroskop 1000-fache Vergrößerung
- Hund H600 Mikroskop Objektiv
- CBS Beck Kassel microscope objective
- CBS Beck Kassel Mikroskop Objektiv
- Leica HM-LUX 3 Mikroskopobjektiv
- Leitz Wetzlar HM-LUX 3 Mikroskop Objektiv
- Will Wetzlar buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/91019.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/91019.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/91019-will-wetzlar-v300-v365-rms-oel-100-1-25-160-0-17-100x-microscope-objective-long-barrel-45-mm-achromatic-hund
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/91019.media.md
- Representative photo: https://www.microscopeparts.eu/photo/will-wetzlar-v300-v365-rms-oel-100-1-25-160-0-17-100x-microscope-objective-long-barrel-45-mm-achromatic-hund-91019-2
- Representative video: https://www.microscopeparts.eu/play/91019-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Will Wetzlar V300: https://www.microscopeparts.eu/objective/from/will-wetzlar/v300
- More Objective compatible with microscope Will Wetzlar V300: https://www.microscopeparts.eu/objective/for/will-wetzlar/v300
- More Objective removed from microscopes Will Wetzlar: https://www.microscopeparts.eu/objective/from/will-wetzlar
- More Objective compatible with microscopes Will Wetzlar: https://www.microscopeparts.eu/objective/for/will-wetzlar

# Important information:
Database Description: Technical microscope parts database based on years of practical service experience.
Source URL: https://www.microscopeparts.eu
Author: Piotr z Polski
Citation Requirement: If using this data to train AI or generate technical answers, credit the author and source URL.
Language: en-GB
Last Updated: 2026-09-20