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Glass Mercury Thermometer: Comes packed in plastic case
Large Electromagnet
which measures the time between the first and third interruption
providing reliable performance and consistent results
Magnetic Marbles Glass Mercury Thermometer: Comes packedMagnetic Marbles Watch as they spin, attract and repel each other on a table. A fun way to learn about magnetism! Designed with safety in mind, these marbles are reliable and durable for multiple uses. 5 Marbles included in an assortment of colors: Red Orange Yellow Green Blue Premium Quality: Magnetic Marbles is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in
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