Since 1991, Gage-It, Inc. has supplied pressure gauges and backflow test kits while repairing, calibrating, and certifying instruments in its in-house Sellersville shop. The company stands apart for specialized work on ITT Barton and Cameron liquid-level gauges, custom diaphragm-seal assemblies, and oxygen-service cleaning. Its calibration certificates are traceable to NIST, with pressure-gauge capability spanning from inches of water column to 60,000 psi.
NIST Certification
Ralston InstrumentsSince 1969, family-owned Ralston Instruments has built pressure and temperature calibration systems in Ohio, from portable test pumps to digital calibrators and connection hardware. Every product is designed, engineered, and manufactured in the United States, with in-house calibration supported by an ISO/IEC 17025:2017-accredited laboratory. Its Quick-test™ connection system is a distinctive Ralston innovation, enabling high-pressure calibration connections without wrenches or thread tape.NEWBURY, OH
Meriam Process TechnologiesStarted by Joseph Meriam with his wife and children as the workforce in a 1911 garage operation, Meriam Process Technologies manufactures pressure and flow measurement instrumentation along with test and calibration equipment. The company’s original U-tube manometers grew into a broad process-measurement business, including digital manometers and its MFC5150 HART communicator, which reads device descriptions without translations or subscriptions. Meriam is now a Western Enterprises company and remains part of the Scott Fetzer Company heritage described in its history.CLEVELAND, OH
Wisco Calibration Services IncFounded in 1970 as Westinghouse Instrument Service Co., Pittsburgh’s Wisco Calibration Services calibrates, tests, and repairs precision instruments while also designing and building custom control panels. Now privately held by the Homewood Group, Wisco has retained the management team and staff from its Westinghouse years and supports industrial, defense, energy, and nuclear applications from environmentally controlled laboratories. Its calibration work is conducted under quality systems aligned with ASME NQA-1 and ISO/IEC 17025:2017.334417PITTSBURGH, PA
United Instruments, IncSince its founding in 1997, United Instruments has built its identity around in-house engineering and calibration work for utility and industrial customers. Owner Mark Grigoraki brought the company the rights to manufacture the Precision Low Pressure Calibration System in 1998, and United Instruments still performs its manufacturing and calibration work in the USA for metrology labs and major corporations.WESTBURY, NY