... case,brass polished case, all this can take with front flange, backflange and U-clamp.BEZEL MATERIAL:Steel black bezel, steel bezel ... , DIN 2.5%,1% accuracy, recalibrators,restrictors, special connections and more. are high quality dry gauges design to provide reliableservice ... ,brass polished case, all this can take with front flange, backflange and U-clamp.BEZEL MATERIAL:Steel black bezel, steel bezel ...