Slide rule
by Firkin - uploaded on May 12, 2017, 11:20 am
From a public domain image on Wikimedia Commons.
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- Tags
- slide rule slipstick analog analogue computer tool math maths mathematics
- Safe for Work?
- Yes
by Firkin - uploaded on May 12, 2017, 11:20 am
From a public domain image on Wikimedia Commons.
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