... Gauge For general use, black steel case, plastic rotating window, brass internal and connection. Product Name:stainless steel & glass dial face Pressure Gauge ... 1) Dial size: 1.5, 2, 2.5, 3 ... % , ±2.5%8)Lip Material: Plastic, plastic dial face, glass dial face9)Bourdon Tube: brass, phosphor bronze, stainless steelInner Packing ...