D0992 Pressure Gauge Oxygen Service Cleaned 2-1/2 in 0 to 200 psi Connection Size 1/4 in NPT Connection Location Lower Smallest Graduation 2 psi Graduations 20 psi Accuracy +/-1 Percent Case Material Stainless Steel Case Color Silver Socket Material 316 Stainless Steel Tube Material 316 Stainless Steel Lens Material Polycarbonate Ring Material Stainless Steel Operating Temp Range -40 Degrees to 150 Degrees F Characteristics PLUS Performance Series 1009