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centre wheel
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Typical components of an electrically powered watch. Typical components of a mechanical watch. Labeled diagram of a watch mainspring mechanism showing interconnected gears, the mainspring, balance wheel, winding pinion, escape wheel, and hands for hours, minutes, and seconds.
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centre wheel

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Typical components of an electrically powered watch.
Typical components of an electrically powered watch.

The center wheel is a crucial component in a timepiece's going train. It drives the wheels that lead to the escapement, a mechanism that regulates the release of energy. A distinctive feature of the center wheel is its pinion post, which carries the minute hand. This arrangement ensures accurate timekeeping by precisely controlling the movement of the hands.1

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2 Britannica Sources
  1. center wheel
  2. motor barrel

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