Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 114
Fig. m. … Note.—Hydraulic gauges are indispensable as it is often necessary tostop the pressure at points below that at which the safety valve has been set. 11^ Pumps and Hydraulics. Within the gauges—or cases, is a small coiled tube closedat one end, while the other end is attached to the socketthrough…
Hydraulic machinery · Pumping machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
