... Steel Case Gauge 4Z2 1)Dial: 1.5", 2", 2.5", 3", 3.5", 4", 6" 2)Connection size: 1/8" 1/4" 1/2" ... 3)CE Certificate Steel Case Gauge 4Z2are high quality dry gauges design ... ,SS and so on.MOVEMENT:Brass, stainless steelCONNECTION:1/8", 1/4", 1/2", 3/8", NPT, BSP or BSPT ... ,SS and so on.MOVEMENT:Brass, stainless steelCONNECTION:1/8", 1/4", 1/2", 3/8", NPT, BSP or BSPT ...