Merit's PLSAS Series Low Pressure Gauges all come with a 304 SS case, 316L capsule and connection and are available in both bottom connection and back connection cases in 2.5", 4" and 6" dial sizes. Each gauge offers a standard recalibration screw on the front dial, laminated safety glass lens, bayonet ring and 1.6% full scale accuracy. The PLSAS Series gauges are suitable for applications and environments that would be corrosive to brass an steel. Merit's 7-Year Warranty applies to every PLSAS Series Low Pressure Gauge.