Panel Mounted Gauge Measuring gas, air, water, oil when required a Panel Mounted Gauge Panel Mounted Gauge Specifications Dial1.5"(40mm),2"(50mm),2.5"(63mm) CaseBlack Plated Steel LensPlastic RingStainless steel InternalBrass ConnectionBrass,1/8" or 1/4" NPT PartsU clamp Range30"Hg.Vac./kpa -- 0-600 Psi/Kpa Accuracy±3-2-3% manometer manufacturer