Gravity Sand Pendulum
$69.99
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Description: Material: Plastic, Iron, and Natural Sand Educational Tool : The pit and the pendulum give spectators first-hand experience of mathematics and physics.Toy & Gift : Creative gravity sand pendulum is best for birthday / housewarming gift, decompression cure gift, unique kids toys. Size: 39cm x 16cm x 14cm / 15.35in x 6.30in x 5.51in
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