Signedstamp on wood: SPINDLER&HOYER / GÖTTINGEN / MADE IN GERMANY
Inscribedon plaque: mAmp.
on wood: E3
FunctionShunts divert most of the current away from a meter extending its range of operation and preventing damage. Depending on the desired range one connects the circuit to a different post on the shunt.
This particular shunt is for very small currents, as small is 1 milliampere.
Historical AttributesFrom Lecture Demonstration set up 'E-3'
ProvenanceJefferson Physical Laboratory, Harvard University, 1981.