D0992 Compound Gauge Oxygen Service Cleaned 2-1/2 in 30 in Hg Vac to 30 psi Connection Size 1/4 in NPT Connection Location Lower Smallest Graduation 1 in Hg 1 psi Graduations 10 in Hg to 5 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