Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 66
Fk; ;.—A system of Special Local Lighting uiSewing Machines. A 6-volt 55 c.p. glow lamp with small para-bolic reflector, placed about 6 inches fromthe needle, gives very strong illumination ofthe work, and the light is completelyscreened from the operator, tHE ILLUMINATING ENGINEER (feb. i{)16) 55 … Fig. 10.—Consumption l2S waits per square foot. Illumination 10—12 ft.-candles.
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Catalog]. (1908)](https://img.insideoutlibrary.com/img/200/ia-catalog00macy-187-469.webp)
