Detailed Product Description General Pressure GaugeDiameter: 1-1/2", 2", 2-1/2", 4", 6"Case: black steel, plasticWindow: glass, acrylic.Bounden tube: brassConnection: brass Connection size: 1 / 8" 1/4" 3/8" 1/2"NPT, BSP, BSPTPressure Range: 0-30Psi-10000PsiAccuracy: 3-2-3%, 1.6-2%Customers brands and logos accepted.