Description
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Pocket Compass
Description
Diameter 50 mm with cover and locking arrangement.
Dial marked with points of compass and degrees.
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Barlow Wheel
Description
This apparatus spins an electrically charged brass wheel spin, without the aid of a motor. When the wheel electrified by a voltage source (battery), the slotted brass disc sets up eddy currents throughout the structure. This electricity is then attracted to 4 strong neodymium magnets, causing the wheel to spin.
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