Chrome steel with true poles length 20 cms.
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Deflection Magnetometer Compass for Physics Lab – A small magnetic needle having 100 mm needle at right angle in a tough plastic case. Cord marked with points of the compass and degrees. Can be used in magnetometer experiments
Made of steel 12 mm diameter, in pairs, half red & half blue (for N & S), spray painted, with keepers.
Educational Compass for Physics Lab – Card marked with points of compass & degrees. 175 mm overall diameter. 110 mm needle in case.
Plastic switch for experiments.
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