1968 Jaeger-LeCoultre Atmos brass case mantle clock made in Le Sentier, Switzerland. This perpetual motion clock runs off of temperature changes. An eco-friendly ethyl chloride gas capsule winds itself automatically by using temperature variations. A silent smooth running clock, that will run for years once leveled and set. A locking lever is used for safe transport. Good working condition, patina to brass, crack on base. Measures 8.25 inches wide x 6.5 x 9.25 inches tall.