179730 ⎘
Apparatus for measuring unknown time intervals by mechanical means using a mechanical oscillator; Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with single push-button or actuation member for start-stop and reset
COUNTING TIMEPIECE DEVICE
#2Display device for a timepiece and timepiece comprising such a device
#3Push button system and timepiece comprising the same
#4Watch comprising a transmission device between a control member and the movement
#5Clock mechanism for storing and displaying time information
#6Chronograph mechanism
#7Single push-piece chronograph