Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 362
Fig. 1.—Dispersive Type Mazdalux MetalReflector for Industrial Lighting. OS 60* 65 BO 163 BO (35° … 30 15 0 15* 30° Fig. 2.—Polar Curve showing characteristiclight distribution of Dispersive MazdaluxReflector and Mazda half-watt type lamp. 352 THE ILLUMINATING ENGINEEB (dec. 1919) VISIT TO THE WORKS OF MESSRS.WM. SUGG AND CO. On Friday, December 5th, a party of members of the London and…
Lighting
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