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 66
light centered? Ans. By moving the arc in a direction opposite to that inwhich it is desired to move the bright spot on the screen. Ques, Describe the lamp adjustments. Ans. There are four adjustments: 1, vertical, 2, lateral, 3,focusing, and 4, feed. 2,720 HAWKINS ELECTRICITY Ques. How is the arc… … -:? Fig. 3,861.—Fulco pastil adapter. By means of this device the Guil pastil may be used withany calcium burner. The main portion of the adapter is a hollow shell which serves as areceptacle for the pastil when not in use.
Electrical engineering
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