Air gages have been reliable tools for more than 70 years, providing accurate and repeatable measures of diameter, depth, parallelism, taper and flatness.
Air gage systems use a precision orifice (jet) at a specific distance from the surface being measured and regulated air pressure to create a pressure-distance curve. As the clearance between a part and the tooling’s jets is reduced, air flow is reduced and back pressure increases. This pressure distance curve is then interpreted into a displacement and displayed on a readout device.