Select the Series 2000 Magnehelic Gage for a versatile low differential pressure gage with a wide choice of 81 models and 27 options to choose from. Using Dwyer’s simple, frictionless Magnehelic gage 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.