Signedon top of case: ELLIOTT BROs LONDON / No 96
FunctionElectrometers are designed to measure the amount of electric charge carried by an object. The parallel metal plates may form a condenser that allows the instrument to detect smaller amounts of charge.
ProvenanceFrom the Department of Physics, Harvard University, 11/19/1956.
Related WorksJ. E. H. Gordon, A Physical Treatise on Electricity and Magnetism, 3rd edition (London, 1891), Vol. 1, pp. 58-59, plate V.