Nominal size 40, 50, 63 and 100 mm Accuracy class NS 40: 2.5 NS 50, 63: 1.6 NS 100: 1.0 Scale range NS 40, 50: 0 ... 1 up to 0 ... 600 bar NS 63, 100: 0 ... 0.6 up to 0 ... 1000 bar or other equivalent units of pressure or vacuum