Select the SERIES 2000 Magnehelic® Gauge for a versatile low differential pressure gauge with a wide choice of 81 models and 27 options to choose from. Using Dwyer's simple, frictionless Magnehelic® gauge movement, it quickly indicates air or noncorrosive gas pressures--either positive, negative (vacuum) or differential. The design resists shock, vibration, over-pressures and is weatherproof to IP67. Select the -HA High Accuracy Magnehelic® Gauge option for an accuracy within 1% of full scale, located below in the Product Configurator. Also included with the -HA option at no extra cost are a mirrored scale overlay and a 6 point calibration certificate. Dwyer® Magnehelic® Differential Pressure Gauge, Series: 2000, 0 to 40 in WC, 1/8 in FNPT, 4 in Dial Diameter, 0.01 % Accuracy, 20 to 140 °F, Die Cast Aluminum Case