Coordinate-measuring machine: Difference between revisions

The accuracy of coordinate measurement machines is typically given as an uncertainty factor as a function over distance. For a CMM using a [[touch_probe|touch probe]], this relates to the repeatability of the probe and the accuracy of the linear scales. Typical probe repeatability can result in measurements within one [[Micrometre|micron]] or 0.00005 inch (half a ten thousandth) over the entire measurement volume. For 3, 3+2, and 5 axis machines, probes are routinely calibrated using traceable standards and the machine movement is verified using gauges to ensure accuracy.