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Rolling ball clock


offshore

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Anyone ever see one of these?

I had one land on my bench today, for a motor overhaul.

The early model motor did one revolution/minute...exactly!

That top rack of balls is 1 per minute for 5 minutes, it then tips to the next level which is 12 lots of 5 minutes = 1 hour, and down to 12 hours.

Then start again. 29 balls required.

They are a most intriguing "toy"

O/S

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