21:38 06.10.2015Kalendarium
1704 - First method for fabricating jewel bearings for mechanical watches and clocks
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![1704 - First method for fabricating jewel bearings for mechanical watches and clocks](/images/kamienie-lozyskowe-w-zegarkach.webp)
Nicolas Fatio de Duillier, a Swiss mathematician developed and patented a method of perforation of bearing stones (jewels) in watch movements.
Notifier: Władysław Meller
Other records: Timeline of Watchmaking Innovations