Detailed Product Description Dial1"(25mm),1.15"(30mm),1.25"(32mm),1.5"(40mm)Case1"(25mm) Nickel plated brass / others stainless steelLensPolycarbonateSpiral TubeBrass / Beryllium copper / stainless steelSocketBrass / Stainless steelConnection 1/8" NPTRange0-60 PSI -- 0-5000 PSIAccuracy±3-2-3%