M269 Giant atmos clock, nickel, Art Deco design, J. L. Reutter numbered 6179, France ca. 1935.

M269 Giant atmos clock, nickel, Art Deco design, J. L. Reutter numbered 6179, France ca. 1935.

High model nickel case, transparency through the four faceted glass sides Clock with Arabic numerals on silvered skeletonised dial On the back signed ‘Brevet J.L. Reutter, S.G.D.G.’ and numbered 6179. Working: The Atmos clock contains a drum with a U-shaped tube containing mercury and a gas. Due to temperature changes a thermics develops in the drum and causes the axle with the U-shaped tube to oscillate to and fro. Because of the continuous changes in temperature and atmospheric pressure there is a continuous oscillation witch causes the movement to roll permanently, we have a ‘Pendule Perpetuele’. The invention was the work of the French engineer Jean Léon Reutter. The clock is in a perfect condition. Very exclusive Art Deco model HWD 33x21x14 cm.