Pith Ball Electroscope (E-3994)

E-3994 Pith Ball Electroscope

A simple device for detecting the presence of electrostatic charges. A plated brass pillar mounted on base supporting two pith balls in un-spun silk.

E-3994/1 Electroscope, Pith Ball, on Bakelite Base

E-3994/2 Electroscope, Pith Ball, on Plastic Base

E-3994/3 Electroscope, Pith Ball, on Metal Stand

E-3994/4 Electroscope, Pith Ball, spare