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 37
—Plate Seventeen Type of UnitDuplexalite Lamp ^OO-watt :\Iazda CClear Mounting Height9 feet above floor rare. Good lighting in composing rooms isThere can be little doubt that the M reater quantity of work turned out inthis room much more than pays the dif-ference in cost between po^r and good…
Electric lighting · Interior lighting fixtures, lamps, and ballasts
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