Arithmometer By L.Payen

A fine example of Thomas de Colmar Arithmometer By L.Payen C 1875 ,signed ” Arithmométre N·1666 L Payen ,V L Payen 46 Rue de la tour des dames. Paris ”
Contained in his original (74 cm) long case.It is the biggest model made by L Payen
There are eleven entry digits, nine multiplier digits and twenty readout digits.
A switching lever for Addition and Multiplication and Subtraction and Division.
Thomas de Colmar was the inventor of this Arithmometer (1785-1870) And when he died his successor was Louis Payen.