1675/en

Angebote auf Amazon ▸▸    Angebote auf Ebay ▸▸

Aus Watch-Wiki
Wechseln zu: Navigation, Suche
1674 << 1675 >> 1676
  • On January 22, 1675 Huygens commissioned Isaac Thuret to complete the first model (prototype) of a pocket watch using a balance-spring (hairspring) and balance (foliot) after their design.

Anzeigen