They are used in laboratories for testing and inspection of other gauges as well as for high accuracy measurement. Available with Accuracy ± 0.5% in Type 8 and ± 0.25% I of F.S.D. in Type 9. Each gauge is tested on a Dead Weight Tester and Test Certificate of Calibration is given alongwith each gauge, Available in dial size 150 and 250 mm, manufactured in all standard ranges in pressure or Vacuum in kg/em' and