# Part name:
Will Wetzlar V200 / V100 4/0.10 160/- RMS 4x microscope objective, achromatic | Eschenbach and CBS Beck Kassel compatible

# Original page URL:
https://www.microscopeparts.eu/part/will-wetzlar-v200-v100-4-0-10-160-rms-4x-microscope-objective-achromatic-eschenbach-and-cbs-91050

# 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 4x microscope objective by Will Wetzlar.

Manufacturer: Will Wetzlar
Magnification: 4x
Model: 4/0.10 160/-
Numerical aperture N.A.: 0.10
Cover glass: not required
Thread: RMS
Tube length: 160 mm
Focal length: 37 mm
Immersion: no (dry objective)
Thread: RMS

This objective can be used both:
- with biological microscopes operating with transmitted light
- with inverted microscopes
- with microscopes equipped with reflected-light illumination
- for macro photography by directly attaching it to a camera

This is a version of the objective with the markings engraved on the housing rather than merely applied with paint (printed). This is important in terms of the durability of the markings – printed markings (without engraving) very often wear off, in which case the objective parameters are no longer visible.

The companies Eschenbach, Kremp Wetzlar, CBS Beck Kassel, Kosmos Stuttgart and Hund Wetzlar also used objectives manufactured by Will Wetzlar, although their own manufacturer name was often printed on the objectives. It can therefore be said with a high degree of confidence that this objective will fit microscopes from these companies – but it is worth checking the focal length first (37 mm or 45 mm).

This objective fits practically any microscope from any manufacturer, provided that it has an RMS thread and supports objectives designed for TL = 160 mm and with a focal length of 37 mm. Several examples of such microscopes are listed in the “compatibility” section, but this is not a complete list.

# Examples of use
- if you have a Will Wetzlar microscope without a 4x / 5x objective and want to complete it with original parts
- if you are looking for a good-quality 4x 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 V200

# Also compatible with the following microscopes:
- Will Wetzlar V200
- Will Wetzlar V100
- Will Wetzlar V300
- Will Wetzlar Wilovert
- Will Wetzlar BX100
- Will Wetzlar BX200
- Will Wetzlar BX300
- Omax M837
- CBS Binocular Model 01
- CBS Binocular Model 02
- CBS Trinokular Model 01
- CBS AS 2
- CBS CBS monocular biological microscope

# Names, descriptions, terms, and search contexts under which this part is searched.
- Will Wetzlar V200 microscope repair parts
- Will Wetzlar V100 / V200 microscope objective
- Will Wetzlar V150 V255 microscope objective
- Will Wetzlar V200 Mikroskopobjektiv
- Will Wetzlar BX300 Mikroskop Objektiv
- Will Wetzlar V365 Mikroskop 4-fache Vergrößerung
- Will Wetzlar V100 Mikroskop Objektiv
- CBS Beck Kassel microscope objective
- CBS Beck Kassel Mikroskop Objektiv
- Kosmos Stuttgart Mikroskopobjektiv
- Eschenbach Mikroskop Objektiv
- Will Wetzlar buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/91050.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/91050.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/91050-will-wetzlar-v200-v100-4-0-10-160-rms-4x-microscope-objective-achromatic-eschenbach-and-cbs
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/91050.media.md
- Representative photo: https://www.microscopeparts.eu/photo/will-wetzlar-v200-v100-4-0-10-160-rms-4x-microscope-objective-achromatic-eschenbach-and-cbs-91050-2
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Will Wetzlar V200: https://www.microscopeparts.eu/objective/from/will-wetzlar/v200
- More Objective compatible with microscope Will Wetzlar V200: https://www.microscopeparts.eu/objective/for/will-wetzlar/v200
- 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: 2026-09-19