The work-piece are inserted to the ring type air jet and where the outside diameters are measured. It is suitable for measuring the workpiece having a relative small diameter.
Air Measuring fixture is a measuring instrument which measures dimension of the work piece precisely based on the principles of aerodynamics. By connecting the air measuring fixture to the air micrometer, the gap between the work piece and the air nozzle that correspond directly to the change in airﬂow and pressure is displayed in enlarged scale. The measuring fixture can measure inside and outside diameters, thickness, perpendicularly, cylindrical and circularity tolerances.
Air micrometer is a precision comparator type measuring instrument that employs air ﬂow volumes and air pressure to determine the size of measured part dimensions. Operation is non-contact and is as simple as presenting a tool to a work piece and observing a reading. Furthermore, using air micrometer will not damage the surface of the measured parts. A row of multiple column can be used for measuring several measuring points in one glance that can reduce measurement times. The beneﬁt of air gauging is its ease of use, which produces accurate results even when used by unskilled operators.