Low Pressure Gauge Capsule 4-1/2 in 0 to 100 in H2O Connection Size 1/4 in NPT Connection Location Lower Smallest Graduation 1 in H2O Graduations 10 in H2O Accuracy +/-2-1-2 Percent Case Material Phenolic Case Color Black Socket Material Stainless Steel Tube Material Stainless Steel Filled With Dry Lens Material Tempered Glass Ring Material Phenolic Operating Temp Range -30 Degrees to 180 Degrees F For Use With Industrial Process and Industrial Furnace Applications