Congreve rolling ball clock - GIF

A Congreve rolling ball clock uses a ball rolling along a zig-zag track rather than a pendulum to regulate the time.

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Previously:

https://www.homemadetools.net/forum/...179#post157713
https://www.homemadetools.net/forum/...621#post143372
https://www.homemadetools.net/forum/...128#post130266
https://www.homemadetools.net/forum/...225#post153958

I hope that is in a good glass case. The noise would drive me nuts after a few minutes.