The balance bridgeBalance Bridge The balance bridge holds the balance wheel in place and connects it to the main plate of the movement. It serves as a key support for the balance wheel. [Learn More] holds the balance wheelBalance Wheel The balance wheel is a component of a mechanical watch movement that oscillates at a consistent rate. It receives a small impulse from the pallet fork, which is part of the escapement mechanism. The balance wheel is connected to a hairspring that controls the rate of oscillation of the balance wheel. The balance wheel and hairspring work together to keep accurate time. The oscillations of the balance wheel drive the timekeeping functions of the watch. The balance wheel is a crucial component of a mechanical watch movement. [Learn More] in place and connects it to the main plateMainplate The mainplate holds all the components of the watch movement together and forms the base of the watch movement. The mainplate is typically made of brass. It serves as the foundation for the movement, and all the gears, wheels, and other components are attached to it. It holds the jewels and pivots in place, and also serves as the base for the bridges and other structural components. [Learn More] of the movement. It serves as a key support for the balance wheel.