Followings are the special features of bourdon tube pressure gauge (111.10) : reliable and economical design en 837-1nominal sizes 40, 50, 63, 80,100 and 160scale ranges up to 0…400 bar applications : suitable for all gaseous and liquid media that will not obstruct the pressure system or attack copper alloy parts pneumatics heating, ventilation, air-conditioning medical engineering specifications : nominal size : 40, 50, 63, 80, 100 and 160 mmdesign : en 837-1accuracy class : 2.5movement : cu-alloy click here for more information.