# Part name:
Zeiss Photomicroscope / Universal microscope push-pull rod with ball knob for intermediate photo tube

# Original page URL:
https://www.microscopeparts.eu/part/zeiss-photomicroscope-universal-microscope-push-pull-rod-with-ball-knob-for-intermediate-photo-tube-91040

# Part manufacturer:
Zeiss

# Full manufacturer name:
Carl Zeiss West Germany

# Other names of this manufacturer:
- Carl Zeiss West
- Carl Zeiss West Germany
- Opton
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:
Service and spare parts

# Description and specifications:
Push-pull rod with knob for switching the light path in the photo intermediate tube for Zeiss microscopes.

This component fits the following microscopes:
- Zeiss Universal
- Zeiss Photomicroscope I
- Zeiss Photomicroscope II
- Zeiss Photomicroscope III RS
- Zeiss Ultraphot

The module consists of the following elements:
- a metal push-pull rod with position markings (white, red and black stripes, as well as a blank/silver marking)
- a round knob screwed onto the end of this rod
- a mounting for attaching the rod to the prism housing
- a cover protecting and covering the internal mechanism

This component is susceptible to various types of damage, including:
- because the rod is quite long when pulled out (approx. 7 cm), it can easily become bent, especially during transport of the microscope. A bent rod can no longer smoothly switch the prisms in the optical path of the intermediate tube
- the Bakelite knob screwed onto this rod can easily chip or become unscrewed and lost
- any of these elements, including the protective cover, can be lost during microscope servicing

The last photo shows the complete intermediate tube, with an arrow indicating which element this is and where it is located. This allows for unambiguous identification of the service component presented here.

# Examples of use
- as a service component when this Zeiss microscope component becomes damaged
- the description includes examples of the types of damage this component may suffer

# Removed from microscope:
Zeiss Photomicroscope

# Also compatible with the following microscopes:
- Zeiss Photomicroscope
- Zeiss Universal
- Zeiss Photomicroscope II
- Zeiss Photomicroscope III RS
- Zeiss Ultraphot

# Names, descriptions, terms, and search contexts under which this part is searched.
- Zeiss Photomicroscope microscope repair parts
- Zeiss Universal / Phomi microscope beam splitter pull rod
- Zeiss Ultraphot pull rod
- Zeiss Universal / Photomicroscope Mikroskop Zugstange mit Kugelgriff für den Zwischentubus
- Zeiss Standard Phomi Mikroskop Zugstange mit Kugelgriff
- Zeiss Phomi III RS trzpień przełączający z gałką
- Zeiss buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/91040.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/91040.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/91040-zeiss-photomicroscope-universal-microscope-push-pull-rod-with-ball-knob-for-intermediate-photo-tube
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/91040.media.md
- Representative photo: https://www.microscopeparts.eu/photo/zeiss-photomicroscope-universal-microscope-push-pull-rod-with-ball-knob-for-intermediate-photo-tube-91040-2
- Representative video: https://www.microscopeparts.eu/play/91040-1
- Other parts from category Service and spare parts: https://www.microscopeparts.eu/service-and-spare-parts
- More Service and spare parts removed from microscope Zeiss Photomicroscope: https://www.microscopeparts.eu/service-and-spare-parts/from/zeiss/photomicroscope
- More Service and spare parts compatible with microscope Zeiss Photomicroscope: https://www.microscopeparts.eu/service-and-spare-parts/for/zeiss/photomicroscope
- More Service and spare parts removed from microscopes Zeiss: https://www.microscopeparts.eu/service-and-spare-parts/from/zeiss
- More Service and spare parts compatible with microscopes Zeiss: https://www.microscopeparts.eu/service-and-spare-parts/for/zeiss

# 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