The component, typically located on the side of a timepiece’s case, is a knurled knob used to manipulate the hands and adjust other functions. It serves as the primary interface for setting the time, date, and sometimes winding the mainspring in mechanical movements. Examples include adjusting the hour and minute hands, advancing the date display, or replenishing power in a manual-wind watch.
This seemingly small component is crucial for the functionality of many timepieces. Its design influences the water resistance of the case and the ease with which the wearer can interact with the watch. Historically, its development mirrors the evolution of watchmaking itself, from simple winding mechanisms to more complex systems integrated with complications.
