Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 640
most people engaged insuch operations as knitting and sewingprefer a strong local light—possiblybecause they can then examine smalldifferences in texture more readily bymoving the material and so altering theincidence of the hght. The series of illustrations shown in thenext few figures might form…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
