Combination Low Pressure Diaphragm Gauge; Pressure Gauge Type Differential; Minimum Pressure 0 Inch Water; Maximum Pressure 35 Inch Water; Display Type Dial; Enclosure Material Black Drawn Steel; End Connection 1/4 Inch Male Threaded; Connection Location Lower; Sensor Element Copper Alloy Diaphragm; Dial Diameter 2-1/2 Inch; Dial Material Metal Lithographed; Dial Color White (Background), Black (Graduation Line/Numeral); Pointer Type Balanced; Pointer Material Aluminum; Pointer Color Black; Full Scale Accuracy 1.5 Percent; Application Filter Monitoring, Leak Tester, Liquid Propane Gas; Movement Material Brass; Includes Twist Lock Polycarbonate Window