Gauge, Pressure, 2-1/2 In., 0 to 100 psi, Connection Size 1/4 In. NPT, Connection Location Bottom, Accuracy +/-1.5 Percent, Case Material 304 Stainless Steel, Case Color Silver, Socket Material Brass, Tube Material Lead Free Phosphor Bronze, Filled With Glycerin, Lens Material Polycarbonate, Ring Material 304 Stainless Steel, Operating Temp. Range -4 Degrees to 150 Degrees F