Rare card
Napier's bones
- Value
- 50 W
- Attack
- 266
- Defence
- 213
- Players
- 0
Napier's bones is a manually operated calculating device created by John Napier of Merchiston, Scotland for the calculation of products and quotients of numbers. The method was based on lattice multiplication, and also called rabdology, a word invented by Napier.
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