Society of Glass Technology · [Sheffield] · leaf 480
e bottom of the test-piece, then open thestop-cock slightly and allow the apparatus to fill slowly with dryair. Allow the test-piece to soak in the dry air until equilibriumis attained. Again raise the levelling bulb until the apparatusfills with mercury, close the stop-cock and lower the levelling… … lofiumji Fig. 15. same level, and read the volume of air in the graduated capillarytube. Lower the levelling bulb to the level of the bottom of thetest-piece and open the stop-cock. Remove the reference test-piece and replace by the test-piece for examination. Repeat oper-ations subsequent to…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
