Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 503
us enabling theoperator to use only one instrument in obtaining the reading of any number of tank upto fourteen, by simply moving the switch lever to the tank numbers indicated on theswitch of the instrument, and, when used in connection with tank rheostats, will enablethe operator to reproduce at… … Fig. 4,557.—Connections and manipulation of rheostat on large copper, brass, and bronzesolutions where variations of voltage are necessary to secure different colors. The Tanks, or Vats.—These vessels are for holding theplating solutions, and should be made of well seasoned wood, liquid 3,158…
Electrical engineering
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