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Introduction
We would like to thank you for the confidence
you have placed in Jaeger-LeCoultre. Our Mai-
son has applied all its expertise and passion to
the creation of this model.
We invite you to consult the operating instruc-
tions and hope your Jaeger-LeCoultre clock
brings you great enjoyment.
A virtually perpetual movement
Leonardo da Vinci had already demonstrated
that perpetual motion was not feasible due to
the laws of physics. But it would have taken
more than that to discourage dogged research-
ers. The latter included the Neuchâtel engineer
Jean-Léon Reutter, who, in 1928, designed a
completely revolutionary clock drawing its
power from variations in the ambient tempera-
ture. It took a few more years of research by our
Manufacture to transpose this idea into techni-
cal reality and patent it. The result could easi-
ly be mistaken for a perpetual movement: the
Atmos® clock was born. The principle is amaz-
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