Shop by Brand

Additel Corporation designs and manufactures pressure and temperature calibration instruments — handheld calibrators, digital gauges, automated pressure controllers, dry-wells, and related modules used in shops and in the field.

Crystal Engineering (part of AMETEK Sensors, Test & Calibration) builds rugged, field-proven digital test gauges and calibration tools used by technicians who need portable accuracy under real plant conditions.

JOFRA (AMETEK Sensors, Test & Calibration) is a leading line of temperature calibration instruments — dry-block calibrators, reference sensors, and process calibrators used by industrial and metrology teams worldwide.

Mansfield & Green (AMETEK Sensors, Test & Calibration) is known for deadweight / piston gauges used as primary pressure standards in calibration labs. These instruments generate pressure from known masses and a characterized piston-cylinder, which is the reference many industrial labs use when TUR or uncertainty demands it.

PIE (Practical Instrument Electronics) designs handheld process calibrators used by instrument technicians for milliamp loop, thermocouple, RTD, frequency, and multifunction calibration in the field and shop.

For over five decades, Ralston Instruments has set practical standards for pressure calibration hardware — Quick-test hoses and fittings, hand pumps, and field gauges built for fast, leak-tight connections.

## REED Instruments