galvanoscope

noun
gal·va·no·scope | \gal-ˈva-nə-ˌskōp, ˈgal-və-nə- \

Definition of galvanoscope 

: an instrument for detecting the presence and direction of an electric current by the deflection of a magnetic needle

First Known Use of galvanoscope

1832, in the meaning defined above

History and Etymology for galvanoscope

borrowed from French, from galvano- (in galvanomètre galvanometer) + -scope -scope

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The first known use of galvanoscope was in 1832

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galvanoscope

noun
gal·va·no·scope | \gal-ˈvan-ə-ˌskōp, ˈgal-və-nə- \

Medical Definition of galvanoscope 

: an instrument for detecting the presence and direction of an electric current by the deflection of a magnetic needle

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