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One of the first watches was made by Peter Henlein, a locksmith in Nürnberg, Germany. The escapement used in the early watches was the same as that used in the early clocks. Early watches were made notably in Germany and at Blois in France
https://www.britannica.com/technology/watch -
Robert Hooke designed a watch with a balance spring in the late 1650s.
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The implement of Jewels onto watches started in London.
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The first patent on the self-winding pocket watch was made in London in 1780.
https://www.britannica.com/technology/watch