Society of Glass Technology · [Sheffield] · leaf 484
LAMP-WORKED AND GENERAL SCIENTIFIC APPARATUS. 105 nothing but wood, it can easily be removed without any damage toany of the parts. A piece of hard wood is cut so as to allow the key of the stopperto pass freely through a hole which is not large enough to allow thebarrel to pass (Fig. 43). A short…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
