Dwyer 2015 Magnehelic® Differential Pressure Gauge is a device used to measure the difference in pressure between two points in a system. It is a mechanical gauge that uses a diaphragm and a magnet to indicate the difference in pressure on a scale. This Differential Pressure Gauge has a circular dial face that displays the pressure measurement in inches of the water column (in. WC).
Applications: HVAC systems, clean room environments, and laboratory testing.