Solenoid, multi loops, 7 turns copper wire 3mm dia, mounted on acrylic sheet with socket connections.
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Made of steel 12 mm diameter, in pairs, half red & half blue (for N & S), spray painted, with keepers.
Mariner’s Compass for Physics Lab – Magnetic needle in Aluminium bowl with gimbals in polished wooden box with sliding cover, dia 75 mm approx
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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