Tag archives: jaeger lecoultre

Self-winding Atmos Clock
By Elizabeth Stewart   |   September 2, 2025

Imagine a clock that winds itself based on changes in atmospheric pressure. This clock doesn’t need a human. It winds itself with the help of a sealed bellows of ethyl chloride: when the temperature rises, the metal spring is condensed, when it falls, the metal spring expands, and the mainspring is wound. Because this clock […]