Evaluator, by General Electric's lamp department, Cleveland, enables safety authorities to evaluate quickly, conveniently and accurately, effectiveness of street lighting systems; "operator's control box," placed on driver's seat, provided with dials and selector switches; it automatically records measurements on card.
Street lighting rated
Safety Eng
Safety Engineering ; 79 , n 2
1940
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1936
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