300 mm square.
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A pack of 12 in plastic case.
Proof Plane for Physics Lab Plated brass disc 22 mm diameter mounted on a metal shaft & fitted to a 6 mm insulating handle. Overall length 150 mm approx.
Cellulose Strip For producing positive charges relative to polythene when rubbed by woollen rubber.. Overall Dimensions : 250 x 25 x 1.5 mm
A plastic vessel, with removable metal internal & external coatings. H x dia 100 x 75 mm approx.; inner metal coating in form of inverted cup to which a rod is fixed.
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