... quality Liquid filled Pressure Gauge:Case sizes: 1.5", 2", 2.5", 3", 4" and 6" Case material: stainless ... it can take with front flange, back flange and U-clamp Bezel material: stainless steel bezel, stainless steel roll ... Connection: 1/8", 1/4", 3/8", 1/2", BSP, NPT or BSPT dependent on model and size; ... option Accuracy: ASME B40.1 Grade B (3-2-3%) Options and accessories: custom dial, metric scale, ...