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Dwyers Magnehelic gauges use extremely high accuracy sensing elements to accurately measure low pressures.. Using the simple frictionless magnehlic movement, they quickly indicates low air or non-corrosive gas pressures - either positive, negative (vacuum) or differential. Widely used to measure fan and blower pressures, filter resistance, air velocity etc.

GNW can supply Dwyer equipment cheaper than buying directly from Dwyer themselves. Please call us with your requirements and we will be happy to quote.