Brunsviga calculating machine, 1892.

Image number: 10302731

Brunsviga calculating machine, 1892.

This barrel calculating machine represents the Brunsviga in its earliest form. Barrel calculating machines were smaller, lighter and easier to operate than Arithmometers. The machine performs multiplication by repeated addition and includes the wheel with a variable number of teeth as patented by Willgodt T Odhner (1845-1905) in 1891. Odhner sold the German patent to Messrs Grimme, Natalis & Co, who manufactured this example.

Image number:
10302731
Credit:
Science Museum/Science & Society Picture Library
Date taken:
29 October 2003 20:24
Image rights:
Science Museum