Chrome steel with true poles length 20 cms.
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Demonstration Transformer – One main coil and 2 interchangeable secondary coils, 6 and 12 volt at 2 amp.
Mariner’s Compass for Physics Lab – Magnetic needle in Aluminium bowl with gimbals in polished wooden box with sliding cover, dia 75 mm approx
Made of steel, 12 x 5 mm in pairs ; half red & half blue (for N & S) spray painted, with keepers.
Barlow Wheel for demonstrating the conversion of electric energy into mechanical energy. Star shaped copper disc 9cm dia. rotatable vertically on pair of adjustable centres and dipping
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