UNITED KINGDOM - MARCH 23: Bissaker's slide rule, 1654. Slide rule, made by Robert Bissaker, 1654. England, United Kingdom, 1654. (Photo by Science & Society Picture Library/SSPL/Getty Images)
UNITED KINGDOM - MARCH 23: Bissaker's slide rule, 1654. Slide rule, made by Robert Bissaker, 1654. England, United Kingdom, 1654. (Photo by Science & Society Picture Library/SSPL/Getty Images)