The lighting of office buildings and drafting rooms / information compiled by A.L. Powell. (1920)
General Electric Company, Edison Lamp Works · General Electric Co., Edison Lamp Works · leaf 10
e lamps, which may be expected to reach the desks OFFICE BUILDING* AND DRAFTING WDOMl 11 under different condition! in room ofl average si/*-, mjt above M by 20 ft. These values are railed utilization immtllltl Themethod of applying then to a ipeolc problem will be found inBulletin Index |ft. VI… … Kh, i. Nitflit \ iew of Totalis Iiuhr»-« t la^Min^ m .i small Invate (Mfu e In MininftUeach outlet supplies 3 ?.>-watt \l\/nv ( Ltinpi »hk| are placed in mirrninverted metal reHectors eonrca led in a •pun met a I h«»u ,in^ fhe m tensity of i Hum mat mn is approximately » * . I . undies Itu- r.…
Lighting · Light bulbs · Light fixtures
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