Atmos clocks are made by the renowned Swiss company Jaeger LeCoultre. They are a very fascinating clock that do not require winding. They are made entirely by hand and are as high quality as their watches. A temperature change of only 2 degrees F provides sufficient energy for 48 hours. Every piece in the movement of the Atmos is machined to an absolute precision. The minute hand is so perfectly balanced that if a fly could settle on it, it would stop the whole clock.

At the back of an atmos clock there is a bellow filled with ethyl chloride gas, the bellow expands and contracts with the changes of temperature or changes are atmospheric pressure. The in-and-out movement of the bellows keeps the mechanism wound up.
Because of the complexities of the Atmos clock, an Atmos needs a complete mechanical overhaul whenever serviced. An Atmos keeping good time does not need any periodic maintenance. Once an Atmos clock starts stopping it generally means that it needs a Clean and an overhaul, very little amounts of dirt will bring your atmos clock to a stop.

We Charge £275 for a service and overhaul, usually an atmos clock can be serviced and returned back to the customer within 10-14 days’ time frame, the clocks mainly require a clean and a service, occasionally a bellows may have leaked and be defective, i.e. not winding the clock-up, these cost £200 for new ones and £100 for recharged (re-filled) ones. Suspension springs cost £200 to replace which includes labour and parts.

We use only factory tools from Jaeger Le Coultre to overhaul our clocks and we use only genuine factory parts too.

1. Expansion Chamber
2. Brass Cover
3. Spiral Spring (counterweight)
4. Chain
5. Mainspring
6. Pulley
7. Small Spring
8. Balance wheel
9. ElinvarWire
10. Escapement