Arrow, Clock face

26-May-2021 Wednesday
In pursuit of the post: "What is this device?"

In pursuit of the post: What is this device? - My, Unknown, Clock face, Slide rule, Mathematics, Calculator, Counting machine, Numbers, Arrow, , Winding mechanism, Longpost

3 more images

Winding mechanism Calculator Slide rule Mathematics Unknown Arrow Counting machine Clock face Numbers

v20240901