Since William A. Baum developed the first Baumanometer® in 1916, W.A. Baum Co., Inc. has made clinical blood-pressure apparatus, including manually operated sphygmomanometers, stethoscopes and inflation-system components. The Copiague, New York, manufacturer individually calibrates its aneroid instruments against Baumanometer® mercury-gravity manometers traceable to NIST and makes professional instruments for trained clinicians and medical researchers.
CE Approved
EN ISO 81060-1:2012
Compliance program
EN 1060-1
Compliance program
EN 1060-2
Compliance program
ANSI/AAMI SP-10
Compliance program
CE
Quality certification
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
Kessler Thermometer and Chase InstrumentFamily-owned and operated since 1934, Kessler Thermometer and Chase Instrument manufactures precision thermometers and hydrometers in West Babylon, New York. The company is one of the last U.S. manufacturers in this field and developed its mercury-free SafetyBLUE line for applications where mercury is prohibited. Its 8,000-square-foot facility includes an ISO-accredited calibration laboratory that certifies instruments and provides NIST-traceable reports.WEST BABYLON, NY
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
Weiss InstrumentsSince 1882, Weiss Instruments has made temperature and pressure instruments and controls, building its name around industrial thermometers and pressure gauges. The company’s history began with Albert A. Weiss Jr. manufacturing glass thermometers with his father after World War I, and its third and fourth generations later carried the business through Long Island before manufacturing moved to Mount Clemens, Michigan, in 2022. Weiss also develops customized instruments for OEM applications, including its patented self-powered Vari-angle digital thermometers and light-powered pressure gauges.HOLTSVILLE, NY