Pressure Gauge, Gauge Type Low Pressure, Dial Size (In.) 2-1/2, Range 0 to 20 Oz / 0 to 35" H2O, Connection Size 1/4" NPT, Connection Location Lower, Graduations 0.5 Oz, 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