Signedon key lever: FRITZ KOHLER / LEIPZIG / GERMANY
Inscribedon side of base in red pain 384;
engaved once and scratched once onto wood of base: E11 [presumably old Engineering School number]
old tag: Electrometer/Key for cap.(acity) Electrometer
FunctionUsed to create and break an electrical circuit. Tag indicates it is meant for use with an electrometer.
(D.P.D.T. stands for single-pole, double throw).
ProvenanceFrom Harvard University Chemistry department; removed to this collection October 10, 1954.