Version vom 31. Juli 2015, 09:58 Uhr von Torsten(Diskussion | Beiträge)(Textersetzung - „|- |bgcolor="#FFFF99" align="center"|'''Events''' |- |<div style="padding:5px" align="left">“ durch „|heading 1= Events |text 1=“)
On January 22, 1675Huygens commissioned Isaac Thuret to complete the first model (prototype) of a pocket watch using a balance-spring (hairspring) and balance (foliot) after their design.