... quality Liquid filled Pressure Gauge:Case sizes: 1.5", 2", 2.5", 3", 4" and 6" Case material: stainless steel case, it can take ... with front flange, back flange and U-clamp Bezel material ... -3%) Options and accessories: custom dial, metric scale, DIN 2.5% accuracy, U-Clamp, restrictors. back connection glycerin filled Pressure Gauge