... .5",4",4.5",and 6"pressure range:-6...0 mbar up to 0...400 barsocket:heavy-duty 316 ss or coper ... (lens):polycarbonate,and safety glass lens availabledial plate:single and dual scale(psi,kpa,mpa,bar,kg/cm2)availableaccuracy:+/- 3/2 ... temperature:-25 to 55 degree centigrade;relative humidity below 80% dual scale diaphragm pressure gauge ...