Curta Calculator

The Curta is a small mechanical calculator developed by Curt Herzstark. The Curta's design is a descendant of Gottfried Leibniz's Stepped Reckoner and Charles Thomas's Arithmometer, accumulating values on cogs, which are added or complemented by a stepped drum mechanism. Wikipedia

Calculation supported: Multiplication, Division, Subtraction, Addition

Purpose: To serve as a mechanical calculator

Component: Winch, Result counter, Revolution counter, Single stepped drum mechanism, more

Application: Regularity rally

Creator: Curt Herzstark