I called a clock repair shop to see what a scale or scale weights might be used for in clock repair and he said “Nothing that I can think of.” So if those are indeed scale weights, they weren’t related to clock repair. However, someone that does clock repair, may also be trained to do some types of calibration. That could be why your dad’s neighbor had them. But that’s purely speculation.
I would be really interested in knowing why they weight though.
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