The balance wheel is a critical component of a mechanical watch movement. It is a circular wheel that oscillates back and forth at a precise frequency, helping to regulate the movement of the watch. The balance wheel is responsible for the accuracy of the watch and is finely tuned to vibrate at a certain frequency. It is the most accurate component of a watch, and it is responsible for maintaining the timekeeping accuracy of the watch. The balance wheel is often made of a lightweight material such as brass or steel, and its balance is adjusted by using screws that are located on the rim of the wheel.
