TGS Test Pressure Gauges TGS, 0.5% Test Pressure Gauge Size : 115mm, 150mm, 250mm Accuracy : 0.5 % Range : Vac to 15,000 psi, Vac to 1000 bar Material : SS316L, Monel MGS Master Pressure Gauges MGS, 0.25% Test Pressure Gauge Size : 150mm, 250mmAccuracy : 0.25%Range : Vac to 15000 psi, Vac to 1000 barMaterial : SS316, Monel, Beryllium Copper