Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 239
was very largely and effectively usedin Berlin, 25 miles of streets being litby 1.531 lamps fitted with upright andinverted burners, two and three burnersin each lantern; they are supplieddirect from four separate compressingplants at a pressure of about 53 to78 in. (water-gauge), the newest t\peof… … Fig. 24a.—Parade Lighting. Details of loweringgear of Keith H.P. lamp bracket. The distance apart of these high-pressure lamps is from 90 ft. to 100 ft.,and the average height of the lampsabove the roadwa}^, measured fromthe burner, about 19 ft. Gas manufactured by the munici-pality was of 12…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
