This is description of this part:
Selenium photoelectric cell for exposure time measurement in Carl Zeiss Jena NU / NU-2 microscopes
This element plugs into a dedicated socket on the stand of the Carl Zeiss Jena NU microscope (this socket carries the number 44 in the instruction manual). It measures the brightness of the image, from which the exposure time for photographs is determined.
The instruction manual for the Carl Zeiss Jena NU microscope is made available by the excellent site mikroskop-online.de here: https://www.mikroskop-online.de/mikroskope/wp-content/uploads/simple-file-list/Mikroskop-Bedienanleitungen-Druckschriften-Carl-Zeiss-Jena-Mikroskopen/30-040-1_G-Grosses-Universal-Forschungsmikroskop-NU-T.pdf
What is this part needed for?
- if this element is missing from your Carl Zeiss Jena NU / NU-2 microscope
- if you have such a selenium photocell, but it is worn out or damaged
