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Improves manual dexterity
Premium Quality: Simple Galvanoscope is made of high-grade construction all the way through
This piece of fabric is intended for use in science activities related to static or friction
5-inch capacitive color display screen is used to display pressure
Double Ball Electroscope measurements Improves manual dexterityDouble Ball Electroscopes. Electroscope for demonstrating static electricity. Two pith balls suspended on unspun silk string to test for charged objects. Plated brass pillar for durability. Plastic base for display. Suitable for high school or college students, or ages 14 to 21 Premium Quality: Double Ball Electroscopes is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for
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