Pinions are small gears in a mechanical watch movement that are used to transfer power between gears. They are typically small gears, with a small number of teeth and a small diameter. Pinions are used to connect gears to each other, and are typically used to connect the wheels of the going trainGoing Train The going train is a series of gears that transfer power from the mainspring to the escapement. It typically includes the third wheel, the center wheel and the escape wheel. [Learn More] to the center wheel or the fourth wheel. They are used to transmit power from one gear to another.

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