Abstract
From calibration data of a measuring instrument, it is not always evident what the uncertainty will be in an actual measurement (or calibration) using that calibrated instrument. Especially where many measured data are involved, such as in CMM measurements, but also in typical dimensional geometry measurements such as roughness, roundness and flatness measurements, setting up an uncertainty budget for each measurement can be a rather impossible demand. The 'mainstream' uncertainty budget can be modified in several ways to allow for more complicated measurements and can be generated automatically by the measuring instrument, by the simulation of measurements by instruments with alternative metrological characteristics. This can lead to a measuring instrument where next to the measured value, also the uncertainty is displayed. It is shown how these principles can be used as well for e.g., roughness, roundness, cylindricity, flatness and CMM measurements.
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