K4543 Pressure Gauge Low Pressure Process 4-1/2 in 30 in H2O VAC to 30 in H2O Connection Size 1/2 in NPT Connection Location Lower Smallest Graduation 5 in H2O Graduations 1 in H2O Accuracy +/-1 Percent Case Material Phenolic Case Color Black Socket Material 316 Stainless Steel Tube Material 316 Stainless Steel Filled With None/Field Fillable Lens Material Glass Ring Material Polypropylene Operating Temp Range -40 Degrees to 200 Degrees F Characteristics Micrometer Pointer