Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 66
Fig. 1.—Portable Colour-matching Unitwith cover attached. … Fig. 2.—Showing use of portable Colour-matching Unit in a Boot Store. evening colours may be selected underartificial light only, all day wear fabricsmust be selected with the point of viewof being seen in both daylight and eveninglight. Furthermore, few individuals, if any,have a sufficiently…
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.