3 ms·
Slide rules date to the 1620s. https://en.wikipedia.org/wiki/Slide_rule#History https://en.wikipedia.org/wiki/Slide_rule#History
by tlb 9y ago
Slide rules date to the 1620s. https://en.wikipedia.org/wiki/Slide_rule#History https://en.wikipedia.org/wiki/Slide_rule#History
- Florin_Andrei 9y agoTIL. Thanks!