Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 842
t hangs; the end of the fibre is woundround a small shaft with a milled head, by means of which themagnet can be raised or lowered. About the tube turns a brassbushing carrying a horizontal indicator, which moves in under SIEMENS POTENTIAL GALVANOMETER. 821 the graduations on the cover. On this… … Fig. 521. the centre of the torsion spring and is so adjusted that the bellmagnet hangs between the coils. On the upper end of the mag-net a little arm is fastened. This latter is twice bent, and is 822 ELECTRICAL MEASUREMENT. iinally continued in a short vertical piece which moves underthe…
Electrical engineering
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