====== Constant-force ======

**Constant-force** (French **force constante** or **remontoir d'égalité**) means the constant delivery of [[torque]] momentum from the [[mainspring]] to the [[gear train]].

See 
  * [[DeWitt Academia Tourbillon Force Constante]]
  * [[DeWitt Academia Tourbillon Force Constante Video]], 4 32


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