Coup perdu escapement - GIF
Coup perdu (lost beat) escapement. Allows the second hand to move 60 times per minute with a 1/2 second pendulum length.
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Previously:
https://www.homemadetools.net/forum/...225#post153958
https://www.homemadetools.net/forum/...3559#post99438
https://www.homemadetools.net/forum/...179#post157713
https://www.homemadetools.net/forum/...102#post130153
https://www.homemadetools.net/forum/...496#post158697