These gauges are suitable for use on corrosive gases and liquids. Diaphragm Material in Stainless steel OR spring steel with teflon protection; Case Material of pressure die cast aluminium, steel or stainless steel. Wetted parts of Stainless Steel, Mild Steel, and with Optional teflon coated. Accuracy ± 1%. Dial Size 100 mm and 150 mm. Pressure Range from 40 millibar to 600 millibar and 0-1 kg/cm2 upto 0-25 kg/cm2, Also Vacuum and Compound.