Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 74
Fig. 3.—Exterior view showing method ofattaching connecting plug and flexible. Fig. 4.—E.xterior view oi projector showingremarkable dispersing lens. … Fig. 2.—Showing testing station on roof (sending end). {Mr. T. E. Ritchie.) 68 THE ILLUMINATING ENGINEER (feb.) applicatiou of metal lamps for search-lights. The table presented herewith givessome interesting data and informationupon which inquiries are frequently madein connection with…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
