Model 1550 and 1553 pressure gages from this company’s U.S. Gauge range (photo) are liquid-filled, which protects the internals from vibrations and pulsations encountered when the gages are mounted on pumps or compressors. Furthermore, liquid filling makes the gage easier to read because it dampens the pointer action and provides lubrication, extending device lifetime. The gages are available in 2.5- or 4-in. sizes, with a pressure range from 0 to 15,000 psi. Vacuum-only and compound gages (up to 300 psi) are also available. All wetted parts are 316 stainless steel, enabling use with harsh chemicals, and the gage case is made from 304 stainless steel and features a crimped-on window, as well as a liquid fill plug at the top of the gage for easy filling. — Ametek Sensors, Test & Calibration (STC), Berwyn, Pa.