Watchmaker's inspection block, useful to check out state of pivots and wheels teeth.
The height is matched for Bergeon 4040 movement holder, so there's no need to refocus microscope.
Print notes:
Support the author:
The model is free to use and published under CC-BY license, however if you want to support the model author you can do it here: BuyMeACoffee
The author marked this model as their own original creation.