The Crystal Engineering hydraulic comparator is beautiful in its simplicity. It allows your pressure gauge to be compared against a standard. Choose a reference gauge...
20Bar Hydralic test gauge
30Bar Hydraulic test gauge
140Bar Hydraulic test gauge
700Bar Hydraulic test gauge
All of which have IANZ endorsed calibration.
...attach the Unit Under Test and the Reference Gauge, apply hydraulic fluid (water, oil, isopropyl alcohol) and then simply and easily apply pressure to chosen setpoints.
Features main screw plus fine-adjust screw.
Can be used with flexible hose and Ralston fittings when testing less than 350Bar.