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 585
tebra areclearly shown together withmuscular details, most stoneswill also be shown. Failuresare frequent in cases of stoutpatients and it is sometimeshopeless to verify stones. 4,700.—Diagram for estimating thestereoscopic angle when tube is shifted23^ inches. Example: If distancefrom tube be 30… … Fig. 4,701.—Scheidel-Western X ray bracket stand and patient. The illustrations show thebracket fastened to the wall by means of screws or bolts through a heavy plate to whichis attached an arc that swings from side to side. To this arc is attached the arm supportingthe tube and protection bowl. It…
Electrical engineering
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