Gonna keep this one short.
Gee, what can this (now) clean collection of parts be?
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Yes, you guessed it, it's in the title.
It was in a shoddier state than it is now. Now, it's so-so. Not great, not terrible.
There was a lot of grime, dust and corrosion. It was apparently forgotten in a warehouse somewhere.
After some cleaning, lubing and prism aligning, it is (almost) fully functional. A broken locking bolt had to be extracted.
The binocular prisms were decollimated - or misaligned, i am not sure about the term. They were sorted after much cursing and praying to various deities.
It came with all possible objectives - 1.8x, 3x, 5x, 10x, and only the 10x low-eyepoint oculars. The objectives have triple screws for individual adjustments, and two of them are badly misaligned. I am not sure how i should tackle adjusting those.
There is no fine focus, not that it's needed anyway.
It is a fun tool to use. The working distance is huge, between 4 and 10 cm depending on the objective. The sensation of depth is something i've never experienced on a microscope. The workmanship is rugged, but excellent. There is a lot of attention to detail in the engineering involved, small things like a locking pin on the inside lip preventing the rotation of the bolts holding the optics. The precision parts are machined out of bronze, the foot and stage are cast iron. The rack and sliding parts are steel.
I am missing the round glass plate, and i am not sure about the function of the parallel bars on the stage.
If any of you guys have any advice regarding the procedure for the individual objective adjustment, don't hesitate to chime in.