Modern lighting : examples of its successful application in the industries. (1920)
National Lamp Works of General Electric Co. Engineering Department. · National Lamp Works of General Electric Co. Engineering Department · leaf 7
om, the diffusion oflight from sources of large area enablesthe workmen to see readily into theinterior of the castings. This facilitatesthe asseml)lv of sewing machine heads bveliminating small losses of time, and sobecomes an important factor in increasingproduction. Note the softness of the… … ^^^m
Electric lighting · Interior lighting fixtures, lamps, and ballasts
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