DA-Spec-190 Pump Barrel System and Tooling
After measuring holes for 90 years, air gages remain a powerful metrology tool. Air gages use compressed air to measure changes in pressure or flow rates. Such tests can determine attributes and measure distances between precision orifices and the workpiece. Air gaging offers sufficient magnification and reliability to measure small tolerances. It can easily determine dimensions with tolerances smaller than 0.005 inch and when gaging tight tolerances, a resolution as small as 0.00002 inch can be achieved. Because air gaging is a noncontact form of gaging, it is ideal for measuring extremely thin-walled parts for soft materials. It is fast, accurate and readily used in production environments.
Source: Mahr Federal Inc.
