Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 301
uminalinQ Engineer of Neio York. i.i. G.—Journal tilr Oa^belenchtung. .1. G. L.—Journal of Oadighting. Z. f. K.—Zeitschrift fiir Beleuchtungnoesen. ^ T-y**^ THE ILLUMINATING ENGINEER. THE l)olopl)ane Eumeten Tlie simple and portable apparatus for measuringillumination, surface=brightness, or… … Showing general appearance of new model of Holopliane Ijiiniotfr.(Dimensions : oj x 4| x 1^.) The Holophane Lumeter is of value not only tolighting engineers, but to architects, medical officers,factory inspectors, photographers, and many othersw^ho require an apparatus which is both accurate…
Lighting
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