Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 270
/<7^ --33- - -i ^^ II I 1 1 s> WM W0i m m i_ _i_ _i_ _i_ I Lamp centres 26 apart tkougftout ^12 Fig. 10.—Range of the Central Markets Rifle Club, Smithfield.Curves of target illumination. THE ILLUMINATING ENGINEER (jxjne) 263 by timber walls and having an overheadconstruction of widely-spaced… … Fig. 11.—25 yards range at the General PostOffice, St. Martins-le-Grand. Disposition of targets and lamps. Opposite each group of targets is a rowof seven 20-watt lamps mounted ininclined glazed circular ship fittings withconcave white enamelled reflectors behindthe lamps. The fittings are…
Lighting
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