A pack of 12 in plastic case.
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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.
Polished finish; 300 x 12.5 mm
Small brass plated spheres mounted on curved arms jointed with ebonite insulating handle.
Overall length 250 mm approx.
Electroscope Pith Ball for Physics Lab A chrome plated brass pillar mounted on a wooden base with 2 pith balls spheres on unspun silk.
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