Detailed Product Description Liquid-Filled Pressure GaugeDiameter: 1-1/2", 2", 2-1/2", 4"Case:stainless steel Window: glass, polycarbonate.Bounden tube: brass or stainless steelResisting Medium: glycerine, silicon oil Connection: brass or stainless steel Connection size: 1 / 8" 1/4" 3/8" 1/2"NPT, BSP, BSPTPressure Range: 0-30Psi-10000PsiAccuracy: 3-2-3%Customers brands and logos accepted.