AIR PRESSURE GAUGE MODEL.HP 7 Calibrated in 0.2kgs/cm2 (20KPA). Increments from 1 to 11kg/cm2 (100 ~ 1100KPA) and 2.5 1b/in2 from 10 to 160 1b/in2. Chrome plated and 270mm long. Head I.D is 8mm