|Diameter:||43.00 mm (19 ligne)|
|Hands:||Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand|
|Distinguishing Technical Characteristics|
Clockwise Balance Cock
Cal. 34 is a 19 ligne chronograph pocket watch movement from Valjoux. This was an early chronograph movement and the mechanism controlling the chronograph is on the dial side rather than the back side of the movement. For this reason, the rear appears much like a standard time-only movement.