Tank Monopoussoir — Original 1930s

Identifying details

• ChronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display.

  Stopwatch function with registers.

• MonopusherMonopusher chronographA chronograph controlled by one pusher that advances through start, stop and reset. The pusher may be integrated into the crown or separate from it. A single-pusher layout does not by itself establish a flyback function.

  ChronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. started, stopped and reset by a single pusher, often in the crown.