Watch Wiki

The Best Watches and Watch Brands

User Tools

Site Tools

Trace: • 1782
1782

1782

  • John Arnold applies the cylindrical balance spring for patent. It makes a watch more isochronous thanks to two Phillips terminal curves.

← 1781 | 1783 →

1782.txt · Last modified: 03.07.2022 15:31 by 127.0.0.1
Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki
Driven by DokuWiki
Donate

© Watch Wiki. All texts are protected by copyright. The respective copyright holders are the signatories of the contributions. For details see Impressum. Regarding objections and complaints (copyright and other rights) also see there. Impressum | Privacy Policy | Copyright | About Watch Wiki