Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 105
FIG. 64.—CIRCUIT FOR COMPARATIVE TESTS OF INDUCTION COILS. longing to that coil which it is desired to compare with theStandard. If coil No. 3 is to be used as a standard its switchwould be thrown, and then coils No. i or No. 2 could be comparedwith it by throwing their respective switches. Mr. R.…
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