Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 586
Dipping. … m ¥ Burning off. Three stages in the Manufacture of Veritas Mantles at EarlsQeld. 572 THE ILLUMINATING ENGINEER (dec.) The concentration of solution usedand the time of iimnewipn vary some-what according to the type of mantlemade, but after a Buitaole time themateria] i- p lased rapidly through…
Lighting
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