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MAKING THE MODERN WORLD
Stories about the lives we've made
 

Object:Synchronous mains electric clock of the self-starting type, c.1934


picture zoom related ingenious images © Science Museum/Science and Society Picture Library

Clock with digital display made by The Westinghouse Electric Supply Co., USA. Clocks such as this used synchronous electric motors and depended on the frequency of mains electricity, via the new national grid, for their timekeeping.
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Object
Object
Electric master clock of the half-minute impulse type in mahogany case, c.1931
Object
Object
Synchronous mains electric clock of the non self-starting type, c.1936
 
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