Differential Pressure Gauge Gauge Nominal Dial Size 4 1/2 in Basic Gauge Case Material Metal Basic Gauge Wetted Parts Aluminum Differential Gauge Connection Type FNPT Differential Gauge Connection Size 1/8 in Gauge Connection Location Back and Side Differential Pressure Range Units in wc Differential Pressure Range Value -2 to 0 to 2 Gauge Operating Temp Range 20 Degrees to 140 Degrees F Rated Total Pressure -20 in Hg to 15 psi Standards EU RoHS II Includes (2) 1/8 in NPT Plugs