Detailed Product Description Refrigerating Pressure GaugeDiameter: 1-1/2", 2", 2-1/2", 4"Case & cover: SS304, SteelWindow: polycarbonateInternal: brass, Inlet thread: 1/4", 3/8", 1/2", NPT ,BSPT, BSPConnection: brassRange: 76cmHg, 1.5MPaAccuracy: 3-2-3%, Cale: psi, bar, Mpa, Kpa, kg/cm2, Hg single or dual scale or according to customers order.Customers brands and logos accepted.