Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 80
Fig. 1.—Standard horizontal hand and automatic projector lamp of the Crompton solenoid type, with an iron deflector fitted to keep the arccentral. (Mr .H. H. Johnson.) … Fig. 2.—Group of 36-in. diameter projectors electrically controlled from adistance, the operating motors being placed at the base of the projectorsThe controllers and the usual steadying resistance arc shown with theprojectors. {Mr. H. H. Johnson.) 74 THE ILLUMINATING ENGINEER (fee.) Messrs.…
Lighting
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