... ", 8", 10",CASE MATERIAL:Steel case, steel black case, steel chrome plated case, steel gold plated case,brass polished case, all this can take with ... on, roll ringTUBE&SOCKET: steel with nickel plated, phosphor bronze ,SS and so on.MOVEMENT:Brass, stainless steelCONNECTION:1/8", 1/4 ... 2.5%,1% accuracy, recalibrators,restrictors, special connections and more. Steel Case General Pressure Gauge 5J2