Society of Glass Technology · [Sheffield] · leaf 358
gh two sets of guides so as to keep them in positionlaterally but to allow them to slide vertically. Small metal capswith countersunk depressions were placed on the ends of the tubes,and in these hollows were rested needle points mounted on theunderside of two tables each of which carried a long,… … corresponding pointer to move to the right or to the left, accordingto the direction of the relative expansion, and from a measurementof this movement by a travelling microscope any differential ex-pansion could be measured to an accuracy of about OOOOl cm. Fortemperature measurements, a Pt-Pt-Rh…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
