"Roentgen" induction coils and other X-ray apparatus (1904)
James G. Biddle Company · Philadelphia : James G. Biddle · leaf 23
ostat is provided. Each battery unit of three cells weighsLittle Battery , .. \ . , A . , ■ but 40 lbs., and is entirely portable in everyWeight. . ,. . ... . .. respect. It is seen that this battery is really light enough in weight to be strictly portable, and that itdoes not suffer from great… … FlGUKb. y Roentgen Self-Starting MechanicalInterrupter. THE eminent satisfaction which our Mechanical Interrupterhas given to our patrons has arisen mainly from the fact thatit requires very little attention for its operation. A great objection to the old forms of mechanical interrupterswas that…
X-rays · Induction coils · Radiography
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