This is description of this part:
Film speed selector (DIN/ASA selector) for the Carl Zeiss Photomicroscope III RS microscope.
This module is located on the front of the microscope base. In the operating manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) it is identified as item 17 (illustration on page 4).
According to the manufacturer's manual, this microscope component is used to adapt the automatic exposure system to the sensitivity of the film in use. The selector adjusts the setting in 3 DIN increments (from DIN 6 to DIN 39) or doubles the ASA values (from ASA 3.2 to ASA 6300).
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 on the microscope. This allows the part to be identified unambiguously.
What is this part needed for?
- as a service replacement part by exchanging the complete damaged module
