... Gauge 4Z2 1)Dial: 1.5", 2", 2.5", 3", 3.5", 4", 6" 2)Connection size: 1/8" 1/ ... :Brass, stainless steelCONNECTION:1/8", 1/4", 1/2", 3/8", NPT, BSP or BSPT dependent on model & size. ... glass & polycarbonate lens are availableACCURACY:ASME B40.1 Grade B (3-2-3%)ASME B40.1 Grade A (2-1-2%)OPTIONS& ... glass & polycarbonate lens are availableACCURACY:ASME B40.1 Grade B (3-2-3%)ASME B40.1 Grade A (2-1-2%)OPTIONS& ...