Clock (torsion)


Atmos (1928), Jean-Léon Reutter

A torsion clock is a mechanical clock which does not need to be wound manually. It gets its energy from changes in temperature and atmospheric pressure, so it can run for years without you having to do anything. The first clock based on this mechanism was invented by Cornelis Drebbel in the early seventeenth century.

The Atmos was designed by Jean-Léon Reutter in 1928. In 1929 Compagnie Générale de Radio began manufacturing the Atmos, until it was taken over by Jaeger-LeCoultre in 1935. The design of the Atmos has remained unchanged ever since.

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Photo credits
© Jaeger-LeCoultre, Le Sentier, Switzerland

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