Hourglass
An hourglass is a device that is used to measure the passing of time. It uses sand, by pouring the sand from one bulb to the other. It is made of two glass bulbs that are vertically joined by a small neck that permits a controlled flow of sand from the upper bulb to the lower bulb.
$13.41
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SKU: gh-gs-0013
Categories: Age 11-13, Age 11-13, Age 8-10, Age 8-10, By Age, By Interest, By Price, Gifts & Hobbies, Measurement Equipment, Norchemist, Physics & Engineering, Physics & Engineering, Shop by Age, Shop by Brand, Shop by Subject, Under $25
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