Posted inINTERNATIONAL, NEWS
Precision Engineering AG brings back 18th century invention in presentation of its first cylindrical hairspring.
First invented by English watchmaker John Arnold in 1776, Precision Engineering AG has shown off its first prototype of the cylindrical hairspring, in Palexpo, Geneva. At the EPHJ show, taking place from June 12-15, Precision Engineering AG presented the prototype of its first cylindrical hairspring which aims to improve isochronism in a watch mechanism. With […]
