Charge is indicated by deflection of an aluminized plastic straw which rotates freely on the saddle of the conducting rod. A scale on the instruments back is graduated in degrees to allow measurement of the deflection. The conducting rod is recessed in the metal housing to shield against air currents. With replacements aluminized straws.
Open Case Form Electroscope
Charge is indicated by deflection of an aluminized plastic straw which rotates freely on the saddle of the conducting rod. A scale on the instruments back is graduated in degrees to allow measurement of the deflection. The conducting rod is recessed in the metal housing to shield against air currents. With replacements aluminized straws.
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