Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 307
n halls, &c.,and can be fitted with either one. two,or three inverlinl l)urn(>rs. The light isC(>mplet(^ly screeiunl from the eye. xm TEE ILLUMINATING ENGINEER. THE l)olopbatie Cumetcr. TJie simple, portable, and accurate apparatus formeasuring illumination, surface=brightness, or… … Showing general avpearance of new model of Holophane Lumeter.(Dimensions : of X -li x If.) The Holophane Lumeter is of value not only tolighting engineers, but to architects, medical officers,factory inspectors, photographers, and many others. Among the users of this instrument mail be mentioned:—…
Lighting
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