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Peerless Calculator

Peerless Calculator

Peerless Calculator
Peerless Calculator
Representing almost 100 years of development beginning with the 1820 "Arithmometer" of Charles Xavier Thomas de Colmar (1785-1870), the Peerless calculator retains many features of the Thomas machine. It performs multiplication by repeated addition and division by repeated subtraction using the Leibniz stepped gear in its original form.