Art glass metals
A 1925 trade catalogue from the Chicago Metallic Sash Company, published by that firm, aimed at architects and glaziers specifying metal sections for art glass and glazing openings. The pictures are plain line drawings of numbered metal profiles, cames and sash sections in cross-section and isometric views, with dimension callouts for full and daylight sizes. A designer could draw on their clean technical linework and the stepped, interlocking shapes of the profiles for simple geometric pattern or border ideas.
