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
understood of an index which should, despite these quickchanges in the current, move steadily to its reading and there stand. Alternating cur-rents have hitherto usually been measured indirectly, as by gauging the expansion of afine wire heated by the current. The Weston instrument consists of a… … Fia. 3.
Mechanical engineering
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