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A Definitive Guide to Dimensional Variation Analysis (Tolerance Stackup Analysis)
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Concentricity Tolerance The Concentricity tolerance helps an axis-to-axis alignment between the Feature under evaluation and the Datum, and is always expressed RFS. The gap variation as shown in the figure occurs as the axis of the Feature under measurement shifts with respect to the Datum axis. Effect of the Concentricity tolerance on the gap is shown in the animation.
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