Pressure Gauge, Gauge Type Low Pressure, Dial Size (In.) 2-1/2, Range 0 to 100" WC, Connection Size 1/4" NPT, Connection Location Lower, Graduations 1" WC, Accuracy (%) +/-1, Case Material Glass Filled Polysulfone, Case Color Black, Socket Material Brass, Tube Material Beryllium Copper, Lens Material Polycarbonate, Operating Temp. Range (F) -4 Degrees to 140 Degrees , Series 1490A, Manufacturers Warranty Length 1 Year