Plastic switch for experiments.
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Size: 50 x 10 x 5 mm
Made of steel 12 mm diameter, in pairs, half red & half blue (for N & S), spray painted, with keepers.
Chrome steel with true poles length 20 cms.
Deflection Magnetometer – Compass box fitted on polished wooden base made of non-wrapping wood with meter scale alongside its length. Compass box is removable
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