WatchesAtlas / Watch knowledge
The Watch Encyclopedia
Understand the details that make a watch.
7 terms
Clear filtersMovements & mechanisms
Hacking seconds
A setting feature that stops the seconds display, usually when the crown is pulled to its time-setting position.
Movements & mechanismsHairspring
The fine spring that restores the balance wheel towards its central position and helps determine oscillation rate.
Movements & mechanismsHairspring collet
The small fitting securing the inner end of a hairspring to the balance staff.
Movements & mechanismsHairspring stud
The attachment securing the outer end of a balance spring to its support.
Movements & mechanismsHeart cam
A shaped reset component allowing a chronograph indication to return to the same zero position.
Movements & mechanismsHorizontal clutch
A chronograph coupling system that engages the timing train through lateral movement of toothed wheels.
Movements & mechanismsHour wheel
The motion-works component carrying or driving the hour indication.