Society of Glass Technology · [Sheffield] · leaf 649
Fig. 159. … Fig. 160. crown. Thus the burning gas is led from the combustion chamber,12, right round the muffle before passing into the flue, 26, and CHEMICAL ANALYSIS. 271 dampers, 32a, above each port, 32, enable the temperature in thedifferent portions of the muffle to be regulated. Longitudinal tiles,38,…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
