Hmmmmm, I have never seen one before......
All the steps seem to be "as cast" and NOT precision machined/ground surfaces.....
How is this thing used?
Thanks
Brian
EDIT: all my online searches just find the usual step-blocks you get with any mill hold-down kit:
https://www.jergensinc.com/en/product/fine-pitch-steel-adjustable-step-blocks?c=0
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