Crystal Engineering manufactures equipment that is used to measure pressure to calibrate other pressure measuring equipment and to diagnose the performance of equipment
US Gauge is one of the world's leading suppliers of high quality, competitively priced pressure gauges, diaphragm seals, temperature gauges and thermowell fittings
Mansfield & Green introduced the deadweight tester based on the floating ball principle in 1966.
PMT Pressure Solutions was founded in the 1960’s, and has been developing a variety of pressure transducers and transmitters over the years