Coulomb Meter - Digital Electroscope

An instrument that enables the measurement of electrostatic charge on an item. The display will show the number of Nano coulombs deposited on the charge disc either by current through a resistance or from a capacitor or from a source of static electricity (a charged plastic rod). An electroscope will deflect its vane but this instrument shows the charge digitally in Coulombs up to ±1999 nano Coulombs, Accuracy ±10 nano Coulombs. Operates on 9V battery. Supplied with manual.