Detailed Product Description Case: steel black case,steel black bezel,Window:glass windowMaterial:.brass internal and connection,dry.Dial size: 1.5"Connections: lower mount connectionThread: 1/8BSP, 1/8"NPT,1/8 PT at your optionalPressure Range : 0~10000psiAccuracy : 2.5% Application: for measurement of system ,air,oil ,water,and other pressure media,which have no effect on bronze and brass