Gauges & Thermometers


marshnewFor more than 140 years, the Marsh Instruments division of the Marsh Bellofram Group of Companies has been synonymous with the design, manufacture and supply of the highest quality pressure gauges and thermometers, with a portfolio that has developed into the most comprehensive gauge lines in the world.

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Mil-Jo-Co Corporation

miljocoMil-Jo-Co The name was derived from our founders’ middle names – Howard Millar Trerice and Brenda Josephine Trerice. Howard M. Trerice was the former executive Vice President at the H.O. Trerice Co. and after a successful career created Miljoco Corporation that was incorporated in 1979 as a domestic manufacturer of temperature and pressure instruments.

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Trerice Co.

trericenewFrom our start in 1923 in Detroit, the H. O. Trerice Co. has remained true to the commitment of our founder: QUALITY in both PRODUCT and SERVICE. This commitment has placed Trerice as a worldwide leader in the manufacture and supply of temperature and pressure measurement and controls.

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Pressure Gauges


  • Process Gauges
  • Industrial Gauges
  • Commercial & Contractor Gauges
  • Utility Gauges
  • Specialty Gauges
  • Diaphragm Seals



  • Industrial Thermometers
  • Electronic Temperature Sensors
  • Bimetal Thermometers
  • Dial Thermometers
  • Vapor Thermometers
  • Drum Thermometers
  • Thermowells

Regulators & Control Valves


  • Temperature Regulators
  • Pressure Regulators
  • Controllers
  • Control Valves