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Headquartered in Michigan City, IN, Dwyer Instruments is a leading controls and instrumentation manufacturer with long-established brand names like Magnehelic® differential pressure gauges and Photohelic® pressure switch/gauges. The Dwyer family also includes Mercoid Controls, Love Controls, W.E. Anderson and Proximity Controls, and covers the range of instrumentation needs, from pressure, temperature, level, and flow to dataloggers, test equipment, and air velocity measurement devices.

  • Pressure Gauges, Switches, and Indicators
  • Flow Transmitters, Sensors, Indicators, and Controllers
  • Level Transmitters, Indicators, and Pump Controls
  • Air Quality and Air Velocity Test Instruments