rass wetted parts for measuring pressure of gas, air, oil, water, and other media not corrosive to brass Dry, non-fillable 1" diameter hex-shaped dial in chrome-plated case with brass internals resists corrosion Pressure ranges from 0 to 1500 psi with 400 psi figure intervals and 80 psi graduation intervals Display accuracy is + or - 5% of span over the entire range of the gauge (ASME B40.100 Grade D) Center-back mount has 1/8" NPT rate