General Instruments pressure gauge Model BSPG-P is designed for reliable panel-mounted pressure indication in demanding industrial service. This lower back mount version uses a 4" / 100 mm dial, 1/2" Male NPT process connection and SS front flange for secure panel installation. Stainless Steel Made, with shatterproof glass window, SS316 wetted parts and a dry case prepared for filling where vibration or dynamic pressure conditions require liquid filling. Measuring range is 0...16 psi with 2nd scale bar, accuracy class is Class 1.0, and the process gauge design is suitable for machinery panels, pump skids, compressor systems and general process duties.