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 ... industrial equipments.CASE SIZES:1.5", 2", 2.5", 3.5", 4", 4.5", and 6", 8", 10 ... , DIN 2.5%,1% accuracy, recalibrators,restrictors, special connections and more. Back Connection U Clamp Pressure Gauge 4Z2U