793 & 794 Series 4 1/2" Duplex Air Gauges are available on integral mounting brackets. The gauges are designed with high quality bronze bourdon tubes and precision phosphor bronze movements for optimum performance and reliability. Black or green dials with white numerals (0-160 and 0-200 PSI scale) are standard. Other scales, i.e. BAR, Kg/Cm2, Kilo Pascal scales are available upon request to measure a variety of air pressures, i.e. MR, BP , BC and MRE.