Dwyer Instruments

Dwyer Instruments is a leading manufacturer in the controls and instrumentation industry, with long-established brand names like Magnehelic® differential pressure gauges and Photohelic® pressure switch/gauges. Dwyer differential pressure gauges are exceptionally responsive, can operate in any position, and are resistant to shock and vibration. The Dwyer family also includes Mercoid Controls, Love Controls, W.E. Anderson and Proximity Controls.

Lesman stocks several sizes and ranges of Dwyer's most popular gauges, and they can be ordered easily through our secure online store.

Differential Pressure Gauges Shop Now!
Capsuhelic® Series 4000 Differential Pressure Gauges
Magnehelic® Series 2000 Differential Pressure Gauges
Minihelic II Series 2-5000 Differential Pressure Gauges
Differential Pressure Switch/Gauges
Photohelic Series 3000 Differential Pressure Switch/Gauges
Mechanical Flow Switches
V4 Series Flotect Vane-Operated Flow Switch
V6 Series Flotect Mini Flow Switch