... rotating window, brass internal and connection. Product Name:stainless steel & glass dial face Pressure Gauge 1) Dial size: 1.5 ... bspt (zg, pt)4) Case material: black steel, plastic, chrome plated steel, stainless steel,iron5) Material of connection and internal: brass, ... ±2.5%8)Lip Material: Plastic, plastic dial face, glass dial face9)Bourdon Tube: brass, phosphor bronze, stainless steelInner Packing ...