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Stepped reckoner
30.12.1672 · AE-2981230
"... it is beneath the dignity of excellent men to waste their time in calculation when any peasant could do the work just as accurately with the aid of a machine." (G.W.L, 1673)
- presented to Royal Society on 1st February 1673
- could add, subtract, multiply and divide
- "the core component is a so-called "Leibniz wheel"
