Brass wetted parts for measuring non-corrosive liquid and gas pressure Circular dial is enclosed in a steel case for corrosion resistance Measures pressure with single scale (water vacuum) or dual scale (psi/kPa)/(water/oz.) Display accuracy is + or - 3/2/3% over the entire range of the gauge (ASME B40.100 Grade B) Lower mount or center back male connection with 1/4" NPT rate Brass wetted parts for measuring non-corrosive liquid and gas pressure Measures pressure with single scale (water vacuum) or dual scale (psi/kPa)/(water/oz.) Display accuracy is + or - 3/2/3% over the entire range of the gauge (ASME B40.100 Grade B) Lower mount or center back male connection with 1/4" NPT rate