Signedmetal tag: MADE BY / RUBICON CO. / PHILIDELPHIA;
another metal tag below: MADE IN / U.S.A.
InscribedTags/Labels: Galvanometer Shunt Rubicon No. 38482; Chemical Laboratories of Harvard University E3293; total Res. 30000 Ohms
FunctionA galvanometer shunt allows currents that are too large to be directly measured to measured by the instrument. It consists of a resistor placed in series with the load so that most the current to be measured flows through it.
Galvanometer reasurements made using a shunt must then be multiplied by a factor given by the setting selected on the shunt.
ProvenanceFrom the Chemical Laboratories, Harvard University.