Dwyer Instruments produces a broad range of precision instruments for measuring, transmitting and controlling pressure, temperature, level and flow.

Dwyer Instruments products include Magnehelic and Spirahelic pressure gauges, Photohelic switch/gages, Rate-Master, Mini-Master and Visi-Float flowmeters, Slack Tube and Flex-Tube manometers, Dwyer pressure switches, Flotect flow and level switches, Hi-Flow valves, Self-Tune temperature controllers and Iso Verter signal converters/isolators.