5 Free Photos of Circular Slide Rules

Museum instrument slide
turkeymuseum
Seki's Salon Exposure Meter - Ridai Museum of Modern Science, Tokyo - DSC07488
self-published workcc-zero
Lord's Calculator 1880 at CHM
calculators in the computer history museumself-published work
Oughtred's circular slide rule with sundial on reverse, Elias Allen, London, c. 1633-1640 - Putnam Gallery - Harvard University - DSC07908
self-published workcc-pd-mark
US Navy 070406-N-4009P-186 Aerographer's Mate 3rd Class Heath Collins, from Kirbyville, Texas, uses a psychometric calculator to determine the dew point and relative humidity for the current location of Nimitz-class aircr
circular slide rulespsychrometrics
1 - 5 of 5
/ 1