Mechanical digital wristwatch, c 1932.

Fernandes, Iris

 
Mechanical digital wristwatch, c 1932.
4 0 c m
 
31cm
actual image size: 23cm x 32cm

Description

Produced in Switzerland, this mechanical wristwatch has a digital display with a 'jumping hour' function and lever escapement.

© Science Museum / Science & Society Picture Library

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