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ReptileMan
144 days ago
My mother has used such manually operating machine in the late 60s. It was called the slide ruler or something.
1 comments
defrost
144 days ago
Mine also.
Truly what goes around, comes around:
https://www.instructables.com/Circular-Slide-Rule/
link
Truly what goes around, comes around: https://www.instructables.com/Circular-Slide-Rule/