This Ashcroft 14004905-101 gauge is a high-quality product made in the United States that measures air pressure. The gauge has a 3-inch diameter face and a 1/4 inch connection diameter for back mounting. It can measure pressures up to 15 psi (1 bar) and has a temperature range of -40 to 160 degrees Fahrenheit. The gauge is suitable for use in various industries, including hydraulics, pneumatics, pumps, and plumbing.