These gauges are suitable for low pressure measurement of non-corrosive gases, commercial heating, gas distribution and filtration. Measuring System of Brass or SS 304 Capsule. Case Material cast aluminium. Available in pressure range 0-50 mm WC upto 1000 mm WC in pressure, vacuum and compound ranges. Available in all standard process connections NPT, BSP etc. ; in dial sizes 100 mm and 150 mm Accuracy ± 2%.