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Roth's calculating machine, 1843. Invented

Roth's calculating machine, 1843. Invented
2 4 c m
40cm
actual image size: 32cm x 16cm

Description

Roth's calculating machine, 1843. Invented and patented by D J Wertheimber. English currency version.

Image Details

Image Ref.
 
10211148

© Science Museum / Science & Society Picture Library

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