Chrome steel with true poles length 20 cms.
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Mariner’s Compass for Physics Lab – Magnetic needle in Aluminium bowl with gimbals in polished wooden box with sliding cover, dia 75 mm approx
50 mm x 50mm magnetic square rubber sheet.
Demonstration Transformer – One main coil and 2 interchangeable secondary coils, 6 and 12 volt at 2 amp.
Half red & half blue (for N & S ) spray painted, with keepers. Made of cobalt steel 10 mm diameter available in different sizes.
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