5 MINUTE SAND TIMER SIZE: 2.8x5.1 inch. Made of premium metal & high borosilicate glass. The 5 min hourglass makes it easy to track your work, measure your progress.Suitable for birthday, exquisite ...
Sand has been used to keep track of the passage of time since antiquity. But using sand to make a persistence of vision digital clock (English translation) is something altogether new. And it’s pretty ...
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