Meet the Chronomeans Rolling Ball Clock: a beautiful piece that uses marbles and gravity to display the current time. 27 balls are used to mark the hour, every 10th minute, and each minute. The marbles are lifted and dropped through a network of gears with precision as time goes by.
More gadgets like this: here
The piece has 3 rails for minute, 10-minute, and hour time indication. It is made in South Korea. The bad news? Something like this doesn’t come cheap.
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