Dwyer 2000-25CM Magnehelic® Differential Pressure Gauge is a reliable and accurate gauge for measuring pressure differentials in air and non-combustible gases. It has an IP67 enclosure rating, a die-cast aluminum case and bezel, and an acrylic cover. With a temperature range of 20 to 140°F (-6.67 to 60°C), it is suitable for various environments. The gauge offers ±2% accuracy (±1% for the HA model) throughout the range at 70°F (21.1°C). It has a 4" diameter dial face and 1/8" female NPT duplicate high and low-pressure taps. Standard accessories are included, and it has overpressure protection.