
If you wanted a reminder or alarm, you pushed a nail at the desired time length in the candle and when it melted to that point, the nail would fall and clank on the metal holder alerting you.
![]() TIL that before there were clocks, there were candle clocks that burned a set amount of hours. If you wanted a reminder or alarm, you pushed a nail at the desired time length in the candle and when it melted to that point, the nail would fall and clank on the metal holder alerting you.
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