Rubbing Cloth Silk for Physics Lab 300 mm square.
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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.
Insulated Spheres for Physics Lab Pair of brass spheres mounted on a insulated rod for demonstrating effect of ionization on a spark gap.
Small brass plated spheres mounted on curved arms jointed with ebonite insulating handle.
Overall length 250 mm approx.
A pack of 12 in plastic case.
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