【Material】The Sand Pendulum Is Made Of Plastic, Iron Plating And Sand, Which Is Durable And Long Time To Use.Size: about 39x16x14cm
【Feature】Different start angles provide different patterns to witness the beauty of gravity and momentum.
【Educational Tool】The pit and pendulum gives viewers a firsthand experience of math and physics.The sand pendulum has been studied for centuries and now you can bring this unique wooden accent to your desktop.
【Toy& Gift】gravity sand pendulum is best for birthday /housewarming gift, decompression heal gift, unique kids toys.
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