Dial:1.5",2.0",2.5",4.0" Case type:stainless steel case and roll ring or bayonet ring Window:polycarbonate window Movement:brass Bourdon tube:brass Connection:brass Pointer:aluminum finish Thread:1/8"and1/4"and1/2"npt or bsp or bspt Pressure range:according to your request Liquid filled:glycerine oil filled