Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 437
he Tokyo Mathematico-Physical Society, Jahrbuch der Radioaktivitat und Elektronik,Zeitschrift filr mssenschaftliche Photographic Photophysik und Photochemie. THE ILLUMINATING ENGINEER. THE Bolopbane Cumeter. The simple and portable apparatus for measuringillumination, surface=brightness, or… … ^Lowing general appearance of new model of Holophane Lumetcr.(Uimeusions : 5J X ih x 1 J.) The Holophane Lumeter is of value not only tolighting engineers, but to architects, medical officers,factory inspectors, photographers, and many otherswho require an apparatus which is both accurate andeasy…
Lighting
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