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  • YourSourceforGD&TTrainingandMaterials

    BacktoGD&TTipsRunoutvsCoaxiality(Concentricity)WheninDoubtUseRunout!

    Avoidspecifyingconcentricity.Concentricityrequiresderivingthemedianlineofafeature.Allofthefeaturesshownbelowareconcentric.Usually,designsrequirethatafeatureberoundaswellasconcentriclikeexampleA.Abettergeometriccontrolisusuallycircularrunout.Circularrunoutcontrolscircularity(roundness)aswellasconcentricity.

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