Electric master clock of the half minute impulse type in mahogany case, c 1931.
4 0 c m
 
21cm
actual image size: 13cm x 32cm

Electric master clock of the half minute impulse type in mahogany case, c 1931.

Fernandes, Iris

© Science Museum / Science & Society Picture Library
Description
Before quartz clocks, synchronome equipment provided accurate time within work places. 'Slave' clocks were advanced by electrical impulses fro a master like this. Made by the Synchronome Co Ltd, according to a patent granted to W H Shortt in 1915.
 
Artist
 
Image Ref.
10438280
 

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