Designed for accurate pressure readings from 15" H2O up to 10 psi, Merit's PLS Series Low Pressure gauge offers a reliable and economical solution for measuring natural gas, air flow and leak detection. Available with a 2.5" or 4" dial, brass capsule and socket, 1/4" NPT connection, PC lens and steel case and either dual or single scale pressure readings. Our 4" gauge offers a 304 SS case with bayonet ring. Accuracy is 3%-2%-3% and custom ranges and dial artwork is available upon request. Merit also offers an optional built-in over-range protection feature for some ranges (contact Sales for more information). Merit's standard 7-Year warranty also applies to this gauge.