Society of Glass Technology · [Sheffield] · leaf 611
Fig. 11 166 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. … surface and contains minute cavities distributed throughout themass. The mould shown is intended for making electric insulators. H. G. C. 233. The Preparation of Transparent Fused Silica Ware.British Thomson-Houston Co., Ltd., London, and the GeneralElectbio Co., Schenectady, New York, U.S.A.…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
