The plate on which all other parts of a watch movement are mounted to a metal holder that supports the bridge and other parts of the movement. The bottom side is the dial side the top side is the bridge side. (or “baseplate”)
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The plate on which all other parts of a watch movement are mounted to a metal holder that supports the bridge and other parts of the movement. The bottom side is the dial side the top side is the bridge side. (or “baseplate”)