# Part name:
Zeiss Photomicroscope III RS microscope pushbutton ! and pushbutton A camera shutter ready

# Original page URL:
https://www.microscopeparts.eu/part/zeiss-photomicroscope-iii-rs-microscope-pushbutton-and-pushbutton-a-camera-shutter-ready-99650

# 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:
The "!" and "A" buttons for the Carl Zeiss Photomicroscope III RS microscope.

These two buttons are integrated into a single module and are located on the right-hand side of the microscope base. In the operating manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) they are identified as items 18 and 30 (figure on page 4).

According to the operating manual, the "!" button "has several functions", while the "A" button is described as "camera shutter ready for photography".

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

# Examples of use
- as a service replacement part by exchanging the complete damaged module

# Removed from microscope:
Zeiss Photomicroscope III RS

# Also compatible with the following microscopes:
Zeiss Photomicroscope III RS

# Names, descriptions, terms, and search contexts under which this part is searched.
- Zeiss Photomicroscope III RS microscope repair parts
- Zeiss Photomicroscope III RS Mikroskop Druckknopf A und !
- Zeiss Photomicroscope III RS pusbuttons ! and A
- Zeiss buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99650.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99650.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99650-zeiss-photomicroscope-iii-rs-microscope-pushbutton-and-pushbutton-a-camera-shutter-ready
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99650.media.md
- Representative photo: https://www.microscopeparts.eu/photo/zeiss-photomicroscope-iii-rs-microscope-pushbutton-and-pushbutton-a-camera-shutter-ready-99650-2
- Representative video: https://www.microscopeparts.eu/play/99650-1
- 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 III RS: https://www.microscopeparts.eu/service-and-spare-parts/from/zeiss/photomicroscope-iii-rs
- More Service and spare parts compatible with microscope Zeiss Photomicroscope III RS: https://www.microscopeparts.eu/service-and-spare-parts/for/zeiss/photomicroscope-iii-rs
- 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: 2026-07-27