Set of Napier's bones, 18th century.
3 1 c m
actual image size: 32cm x 23cm

Set of Napier's bones, 18th century.

Richardson, Claire

© Science Museum / Science & Society Picture Library


Set of Napier's rods in a wooden box. John Napier (1550-1617), discoverer of logarithms, created the popular calculating tool known as Napier's rods or bones. Napier's rods reduced muliplication to a sequence of simple additions; division and square roots could also be achieved.



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