Complication
Chronograph
How it works
A start/stop/reset mechanism couples a seconds hand to the train via column wheel or cam and clutch.
Why it was invented
Measures elapsed time for astronomy, racing, aviation and medicine.
- Invented
- 1816 (Louis Moinet); 1821 (Nicolas Rieussec)
- Credited to
- Unknown
- Related
- Flyback chronograph
