Magnetic Sand Timer
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Product Description
What's the secret? A powerful rare earth magnet is hidden in the base. Set the device on its stand and watch the metal grains arrange into a beautiful, spiked sculpture. Each time you turn it over, a different pattern is formed as the ferrous material is drawn into the magnetic field.
Not intended as a real-time-keeping device; actual times will vary.
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Product Details
- Product Type: Science & Tinkering Kits