A pack of 12 in plastic case.
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Electroscope Pith Ball for Physics Lab A chrome plated brass pillar mounted on a wooden base with 2 pith balls spheres on unspun silk.
Rod Ebonite for Physics Lab With rounded ends; 300 x 12.5 mm.
Biots Apparatus for Physics Lab is a spherical conductor on insulating stand with insulated handle, to show that electrostatic charge resides on outer surface
Cellulose Strip For producing positive charges relative to polythene when rubbed by woollen rubber.. Overall Dimensions : 250 x 25 x 1.5 mm
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