3 3 c m
40cm
actual image size: 32cm x 25cm
Description
The Stanhope demonstrator, invented by Charles, 3rd Earl Stanhope (1753-1816), can be used to draw the correct conclusions from logical propositions. This was probably the first attempt to solve logical problems by mechanical means.
Image Details
Image Ref.
10302931
© Science Museum / Science & Society Picture Library