Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 519
Fia. 3. … Firs. 3. 4—Weston electric gauge—details. (removed) are shown in Fig. 4. The movable coil has combined with it spiral springs arrangedin substantially the same way as has already been described in connection with the direct-current instrument, and its pivot carries the index-needle, which moves…
Mechanical engineering
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