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HowTo – Determine the age of your Jaeger LeCoultre watch
suap.info - Atmos Clock Dating
Atmos is the brand name of a mechanical torsion pendulum clock manufactured by Jaeger-LeCoultre in Switzerland which does not need to be wound manually. It gets the energy it needs to run from temperature and atmospheric pressure changes in the environment, and can run for years without human intervention. The clock is driven by a mainspring, which is wound by the expansion and contraction of liquid and gaseous ethyl chloride in an internal hermetically sealed metal bellows. The ethyl chloride vaporises into an expansion chamber as the temperature rises, compressing a spiral spring; with a fall in temperature the gas condenses and the spiral spring expands, winding the mainspring. To run the clock on this small amount of energy, everything in the Atmos must be as friction-free as possible. For timekeeping it uses a torsion pendulum , which consumes less energy than an ordinary pendulum. The torsion pendulum has a period of precisely one minute; thirty seconds to rotate in one direction and thirty seconds to return to the starting position.
How to Determine the Value of a Lecoultre Atmos Clock
The date can decide its monetary value, but collectors of LeCoultre Atmos clocks will find any version of this elegant timepiece a treasure. Retail and secondary markets cater to clock watchers who continue to be captivated by the classic chronometer. Surprisingly, considering all of the interest in Atmos clocks, there is no definitive book that lists all of the many models and their corresponding serial numbers.
If you are curious about day clock or the Atmos, then please join The International day Clock Chapter These are little tidbits of information. If you are curious about day clock or the Atmos, then please join The International day Clock Chapter I have many Atmos parts for sale. But what is an Atmos clock and what does it look like? I have a repair list for Dating the Atmos which will date your Atmos via the serval number.