This is description of this part:
This is mount ring of the Zeiss microscope binocular head.
This type of head is used in Zeiss Axioskop 20 microscopes (this head has the catalog number 45 29 07 - alternative notation: 452907) as well as in inverted microscopes Zeiss Axiovert 100. It is very likely that the same head was also installed in other microscope models, e.g. Zeiss Axioskop 50 and others.
Note - Please review the photos and dimensions of this item carefully as it is possible that this is not a complete assembly connector.
What is this part needed for?
