U Clamp Pressure Gauge 4J2 1)Dial: 1.5", 2", 2.5", 3", 3.5", 4", 6" 2)Connection size: 1/8" 1/4 ... " 1/2" 3)CE Certificate U Clamp Pressure Gauge are high quality ... 5", 2", 2.5", 3.5", 4", 4.5", and 6", 8", 10",CASE MATERIAL:Steel case, steel black case, steel ... , recalibrators,restrictors, special connections and more. Back Connection U Clamp Pressure Gauge 4Z2U