The Balance
Reference no 720
In the figure the Balance (720) and the Hairspring can be recognized which together form the oscillator that controls the pace of the movement i.e. the right time. The red stone in the center is the Impulse Jewel which has an important role in the balance system. When the Balance oscillates back and forth the Impulse Jewel interacts with the Pallet Lever fork and 1) receives an impulse to "keep on swinging" and 2) also controls the precise movement back and forth of the Pallet Lever
