This video explains the difference between position tolerance and concentricity on a cylindrical feature with GD&T per ASME Y14.5. It shows why concentricity is not the term you should use and instead switch to "coaxial" to keep diameters centered on a datum axis. It also shows the different meanings in can have in the ISO-GPS standards.

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#GD&T #geometric tolerance #Y14.5-2018 #runout tolerance #total runout