Shop by Brand

Additel Corporation designs and manufactures pressure and temperature calibration instruments — handheld calibrators, digital pressure gauges and modules, automated pressure controllers, dry-well calibrators, and calibration software used across process industries worldwide.

Crystal Engineering (part of AMETEK Sensors, Test & Calibration) builds rugged, field-proven digital test gauges and calibrators — including the XP2i, the industry-standard intrinsically safe test gauge — plus nVision reference recorders, HPC handheld calibrators, and CPF high-pressure fittings.

JOFRA is one of the world’s leading manufacturers and developers of calibration instruments for temperature, pressure, and process signals, as well as temperature sensors. Inventor of the portable high-precision dry-block temperature calibrator, JOFRA’s range also covers precision thermometers and temperature baths, temperature sensors, handheld pressure calibration instruments, and process signal calibrators for control loop calibration, measurement, and simulation.

Mansfield & Green (AMETEK Sensors, Test & Calibration) manufactures pneumatic and hydraulic deadweight testers for field and laboratory pressure calibration.

For over five decades, Ralston Instruments has been setting the standards in pressure and temperature calibration and testing. A trusted partner for industries worldwide, Ralston designs, engineers, and builds its precision components, instrumentation, and software in the United States—delivering accuracy, reliability, and innovation for real-world calibration challenges.