A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 432
PNEUMATICS. 407 watch up to an 8 or 10 inch face. They consist of a cylin-drical box of metal, with a top of thin, elastic, corrugatedmetal. The air is removed from the box. When the atmos-pheric pressure increases, the top is pressed inwards, andwhen it is diminished, the top is pressed outwards… … Fig. 191. cause it to move either to the right or left over a graduatedscale. These barometers are self-correcting (compensated)for variations in temperature. They are very portable,occupying but a small space, and are so delicate that theyare said to show a difference in the atmospheric…
Electrical engineering · Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
