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Search results for: 'push pins'

Search results for 'push pins'

Solar Radiometer Windmill

$38.70

Size: 8*20cm. Demonstrates that light can produce force on dark colored surfaces Four square panels / vanes are mounted on a rotating shaft in an evacuated glass tube / bulb One side of each vane is black; the other side is silver Direct light pushes on the black sides, causing the wind vane to rotate Glass base for stability Learn More
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Screw Pushpins (set of 20)

$15.00

Each pack includes 20 tacks. Hold up reminders, pictures, business cards, maps or notes Creative design to brighten up bulletin /cork board, great for classrooms, offices, and home use. Learn More
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