Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 17
Fig. 2. Draft Gage. Fig. 3. Simple Barometer. nut F, by means of which the cistern is moved vertically thus raising or lowering the mercurylevel and adjusting same to the tip of the ivory pointer G, which is the zero of the scale. All standard or observatory barometers of the mercurial type possess…
Building · Heating · Ventilation
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.