... Oil Filled Pressure Gauge (PG-6067) 1) Case: steel with bronze plate 2) Dial: 1.5", 2", 2.5", 3", 3.5", 4", 6" 3) Connection ... : bottom, top, left, right, center back, offset back 6) Material: a) Case and rolling bezel: steel b) Bourdon tube: brass, phosphor bronze, stainless steel c) Connection: brass, stainless steel ...