Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 53
rn so as to include the greatestnumber of lines of force but is resisted bythe torsion of the suspending wires. If apointer and suitable scale are attached tothis coil, comparative readings of th?strength of current may be made. In-struments of this construction are sen-sitive and will easily… … Fig. 46—Simple Galvanometer. D had several thousand ohms resistance, the galvanometer might be calibrated in volts and em-ployed as a voltmeter. If, on the other hand, coil D were wound with a few turnsof relatively coarse wire, it might be calibrated in amperes and would, therefore,be known as an…
Telegraph, Wireless
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