Amplitude in watchmaking refers to the measure of the balance wheel's rotational movement in degrees during its oscillation. It indicates how far the balance wheel swings back and forth, which is crucial for the accurate timekeeping of a watch. Typically, a healthy amplitude for a mechanical watch ranges between 270 and 315 degrees when the watch is lying flat. This range ensures that the watch has sufficient energy to maintain accurate timekeeping without causing excessive wear on the escapement components. A lower amplitude might suggest issues such as increased friction or insufficient power, which can affect the watch's performance. Conversely, an excessively high amplitude can lead to potential damage to the watch's delicate components. Monitoring amplitude is essential for watchmakers and technicians to diagnose and maintain the optimal performance of a timepiece.