by American Educational Products
Buy new: $17.00
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This electroscope box is made of anodized aluminum with glass windows in both the front and back of the box. The glass plates prevent erratic motion of the leaves by shielding them. This allows the leaves to react only to charges that are intentionally brought near them. The plates are easily removed, allowing for introduction of ionizing material. Instructions are included. Instructions provided. Measures 5-1/8" length by 3-5/8" width
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