The Orange Research 1201-S1007 3000PSI 0-50PSI Pressure Gauge 1201PG-1A-2.5B is a high-quality industrial pressure gauge with a dial size of 3 inches and a fitting size of 0.25 inches. This model, designed by ORANGE RESEARCH, can measure pressures ranging from 0 to 50 PSI, making it suitable for a variety of industrial applications requiring accurate readings. With a precision of 3000 PSI, this pressure gauge is a reliable tool for monitoring and controlling air pressure in hydraulics, pneumatics, pumps, and plumbing systems.