Secondaries-1840

Secondaries

Secondary pocket watches were used around 1800 after the model of the watches where they were used in 1755 by the Frenchman Romilly. 

Orologiul electric – 1840. 


It belongs to Alexander Bain. At the same time, the physicist Charles Wheastone invented the electrical distribution of the hour starting from a central clock - "mother clock".
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