Dial size,Face and pointer,Movement,Brudon tube,Window Dial size: 1.5”, 2.0”, 2.5”, 3. ... screw in rollWindow: glass windowFace and pointer: aluminum finishMovement: brassBourdon tube: brass or phosphor bronzeConnection: brassThread:1/8”, 1/4”, 3 ... , which have no effect on bronze and brass Exact industrial manometer