Balance/Oscillator (Balancier réglé / Ozillateur)

Balance together with balancespring, which is supplied with energy through the gear train, produce the oscillations regulating the movements of the gear train of the mechanical watch.

The balance is a component part of the controlling device (assortment) which consists of the escapement which itself consists of the escape wheel and the pallet fork (mobile d’échappement, ancre). The escapement makes possible the uniform distribution of the energy coming from the barrel (barillet) to the balance. Balance and balancespring together produce the oscillations regulating the gear train of the mechanical watch.