Small Brown Black Marble 3-piece set (1226) 1

Small Brown Black Marble 3-piece set (1226)

Origin: French
Movement: n/a
Serial: n/a
Style: Victorian
Age: Late 1800s

SKU: MC477. Category: .

Product Description

Mercury filled temperature compensated pendulum, open escapement. The pendulum includes 2 vials of mercury used to fight one of the biggest enemies of accuracy: temperature fluctuation. If it gets really warm, the mercury would expand upwards in the vials and compensate for that point of oscillation.