D7963 Pressure Gauge Gauge Type Liquid Filled Dial Size (In.) 2-1/2 Range 0 to 100 psi Dial Size (mm) 63 Connection Size 1/4 NPT Connection Location Lower Smallest Graduation (PSI) 1 Graduations 10 psi Accuracy (%) +/-1 Case Material Zytel Nylon Case Color Black Socket Material Brass and Buna-N Tube Material Copper Alloy Filled With Glycerin Lens Material Polycarbonate Removable Ring Material Twist On Zytel Nylon Operating Temp Range (F) -40 Degrees to 150 Degrees Series LFS-21