
3 4 c m
40cm
actual image size: 32cm x 26cm
Description
Calculating machine, made by James Bullock, in a metal case, invented by Charles Stanhope, 3rd Earl (1753-1816), in 1777. Stanhope was an English politician and scientist who is known for his inventions in printing, including an iron pres and stereotyping, a proces for moulding and reproducing forms. The calculator was the first to tackle the tens carry mechanism.
Image Details
Image Ref.
10323036
© Science Museum / Science & Society Picture Library