2.5" oil gauge with flange,low mount,S.S case 1.5", 2.0",2.5" oil gauge with flange,low mount,S.S caseback connection,range: 0-6000 psithread: 1/8" 1/4"NPT, BSPT.BSP 1.5", 2.0",2.5" oil gauge with flange,low mount,S.S caseback connection,range: 0-6000psithread: 1/8" 1/4"NPT, BSPT.BSP S.S material oil fill gauge