Quantitative Electroscope, 1 Each

The United Scientific® Quantitative Electroscope by United Scientific is a static electricity teaching instrument that shows charge strength as a vane deflection read against a printed scale in 10° steps up to 90°. A 5″ diameter, 3″ deep metal case reduces the effect of air currents, and a 3″ top plate receives charge. Used in high school and introductory college physics labs.