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.

Circular Slide Rule

Updated On: 13.03.15

Leave your message, comment or feedback:
Your Name (shown) & Your E-mail (hidden) is used only to alert you when someone reply your message.