Available in a variety of sizes, mounting styles and optional configurations, Type 111.1-1/2 Pressure Gauge, 30 INHG/760 mmHG VAC, 1/8 NPT CBM, Plastic With an industry recognized ASME 3/2/3% of span accuracy, these gauges are the industry standard in the commercial gauge line.12 gauges are suitable for many tough applications including regulators, medical, pneumatic controllers, compressors, valve positioners, and pumps..