====== Duoface ======
Dual-sided movements (**duoface** in [[Jaeger-LeCoultre]] parlance) drive a watch face on each side.

Most watches have a face on only one side, below the bottom plate. However, some watches, notably the [[Jaeger-LeCoultre Reverso]], features a watch face on two sides driven by a single movement. Engineering such a "duo-face" movement is extremely difficult, since the pinions must pass through the entire movement. This is especially true for [[automatic]] movements, in which the [[rotor]] would interfere with the pinions driving one side.

===== Examples =====
  * [[JLC 844]] - Duoface with hour and minute on both front and back
  * [[JLC 854/1]] - Duoface with hour/minute and small seconds on front and second timezone hour/minute and 24 hour time on back
  * [[JLC 859]] - Duoface with retrograde chronograph on the back 
  * [[JLC 864]] - Duoface with hour/minute on front and second timezone hour/minute on back
  * [[JLC 862]] - Duoface [[flyback]] movement
  * [[JLC 878]] - Duoface with hour/minute, small seconds, and date on front and second timezone hour/minute and 24 hour time plus power reserve on back
  * [[JLC 986]] - Duoface with hour/minute, small seconds, and date on front and second timezone hour/minute and 24 hour time on back


{{tag>Jaeger-LeCoultre Duoface_movements}}