... filled pressure gauge 1.size:1.5", 2", 2.5", 3", 4", 5", 6" 2.case:SS304 3.internals: brass 4.liquid filled pressure oil filled pressure ... 3.internals: brass, phosphor bronze, stainless steel4.liquid filled pressure5.connection size:1/8", 1/4", 3/8", ... 316 stainless steel9.connection material: brass, stainless steel10.dial and pointer: aluminum11.window: glass, polycarbonate12.pressure range: vacuum, ...