Differential galvanometer
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| (Elec.) | a galvanometer having two coils or circuits, usually equal, through which currents passing in opposite directions are measured by the difference of their effect upon the needle. |
| See under Differental, a. |
See also: differential, Galvanometer
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.