... 1.5"- 2.5" 3.Range&Connector:Customize Hydraulic Pressure Test Gauge (PG-6064) 1) Case: steel with bronze ... 2", 2.5", 3", 3.5", 4", 6" 3) Connection size: 1/8", 1/4", 3/8", 1/2" 4 ... b) Bourdon tube: brass, phosphor bronze, stainless steel c) Connection: brass, stainless steel d) Dial and pointer: aluminum e) Window ... high quality products at competitive prices. Hydraulic Pressure Test Gauge(PG-6064)