e cell of through the shaft, C, plate, D, spring, E, coil, F, spring, Grenet battery is sufficient. The coil consists of reverse direction through the coil. G, plate, H, shaft, I, and standard, J, back to the about 325 convolutions of No. 18 magnet wire The success of the operation depends entirely… … (Continued on p. 312.) while the switch SIMPLE AFFASATUS FOB DEMAGNETIZING WATCHES. 11886 SCIENTIFIC AMERICAN, INC
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