Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 148
Fig. 101 Fig. 102 to draw the rod into the coil, and thus cause the pointer(P) to move over the graduated scale (S). Gravity is thecontrolling force against which the magnetic force of the coilacts. The rod (R) and the coil (C) are both formed to thesame curvature. The rod (R) is composed of very…
Electrical engineering
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