Made of steel, 12 x 5 mm in pairs ; half red & half blue (for N & S) spray painted, with keepers.
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Chrome steel with true poles length 20 cms.
Mariner’s Compass for Physics Lab – Magnetic needle in Aluminium bowl with gimbals in polished wooden box with sliding cover, dia 75 mm approx
Deflection Magnetometer – Compass box fitted on polished wooden base made of non-wrapping wood with meter scale alongside its length. Compass box is removable
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
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