History of Calculators » Calculimetre

G. Charpentier of France

The Calculimetre was invented in 1890 by G. Charpentier of France and made by H.Morin, 11 Rue Dulong, 75017 Paris France. The Calculimetre, a metal circular slide rule, about 60mm in diameter.

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Circular Slide Rule

Updated On: 13.03.15

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