Airgas® offers a wide selection of industry standard pressure gauges. These nickel-plated brass, stainless steel and monel gauges feature a single psig scale. All gauges are cleaned to analytical and oxygen service standards. The large, bold font makes valves very easy to read. Rated accuracy is stated as a percentage of full-scale reading of the gauge. Brass, Stainless Steel and Monel gauges are accurate to ±3% for the first third of the scale, ±2% of the second third, and ±3% of the last third of the scale. All gauges meet ASTM standards for safety.