Reutter Atmos Clocks
Reutter Atmos motor detail.
Mercury and liquid ammonia under pressure. At room temperature pressure inside the tube is around 8-12 bar. Can go up to 20 bar if the clock is standing in the sun.

Reutter Atmos motor detail.
Mercury and liquid ammonia under pressure. At room temperature pressure inside the tube is around 8-12 bar. Can go up to 20 bar if the clock is standing in the sun.