Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 273
Fig. 17.—A range having a high ratio of maximum to minimum target illumination. 266 THE ILLUMINATING ENGINEER (june) downwards on the ground in front of thetargets, and there is no doubt that if thesix mantles were redistributed along the … \\^x\\\\\\\\\\\\\\\\4.\v\n5^:4^« Fig. 18.—Disposition of lamps and targets inrange shown in Fig. 17. range and provided with reflectors of aproper characteristic the twin peaks couldbe removed from the illumination curve for rapid fire—it is desirable to makeprovision for altering the illumination…
Lighting
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