... 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 gauge1.size:1.5", 2", 2.5", ... :SS304 3.internals: brass, phosphor bronze, stainless steel4.liquid filled pressure5.connection size:1/8", 1/4", 3/8 ... quality products at competitive prices. oil filled pressure gauge