Crystal Engineering, a part of AMETEK Test & Calibration Instruments, produces the industry's most accurate field-capable Pre ... ssure Gauges, Calibrators, and Reference Recorders for applications up to 15,000 psi, including the nVision Data Recorder, XP2i Digital Pressure Gauge, M1 Digital Pressure Gauge, and 30 Series Field Calibrator. We specialize in extremely rugged, Intrinsically Safe, hand-held pressure measurement devices. We pioneered silicon sensor technology with Active Digital Temperature Compensation and excellent linearity. This paved the way for us to lead the industry with gauges specifying of-reading accuracy instead of “of full scale” accuracy. We also offer CPF Fittings: a patented line of calibration & test medium-pressure fittings, equipped with a self-venting weep and a replaceable O-ring that allows leak-free seals up to 10,000 PSI – with only finger-tightening. Crystal Engineering is based in San Luis Obispo, CA and specializes its products for testing, calibration and measurement applications in oil & natural gas, offshore drilling, oil refineries, gas distribution, power generation, nuclear power, waste water, water supply, manufacturing, aerospace, and aircraft maintenance. read more