Digital Manometer, Accuracy +/-0.5 Percent Full Scale from 60 to 78 Degrees F (15.6 to 25.6 Degrees C), +/-1.5 Percent Full Scale from 32 to 60 Degrees F and 78 to 104 Degrees F (0 to 15.6 Degrees C and 25.6 to 40 Degrees C), Process Connection Size 1/8 in, 3/16 in, Process Connection Type Hose Barb, Series 475, Data Interface Not Applicable, Display Units in wc, kPa, psi, For Tubing Diameter 1/8 in, 3/16 in