Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 204
comijanied bya lower diversity coeiificient, but thedifference is of no practical importagce. Judged from a practical standpoint,both svstems would probably be re-garded as satisfactory. THE ILLUMINATION OF PRINTING WORKS BY GAS. 175 .Both high- and low-pressure systemsof lighting are in use in… … Fig. 4a.—Illumination of Comiioting Frames—Back-to-back arrangement. Jlio ---., LOV/CRySURFAC E -V y UPPER ■-y._ - ~^^-. Distance in feet along Frame.Fig. .5.—Showing comparison of Upper and Lower surfaces of a Composing Frame under DaylightIllumination (Solicitors Law Stationer) Societj)- The…
Lighting
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