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BacktoGD&TTipsRunoutvsCoaxiality(Concentricity)WheninDoubtUseRunout!
Avoidspecifyingconcentricity.Concentricityrequiresderivingthemedianlineofafeature.Allofthefeaturesshownbelowareconcentric.Usually,designsrequirethatafeatureberoundaswellasconcentriclikeexampleA.Abettergeometriccontrolisusuallycircularrunout.Circularrunoutcontrolscircularity(roundness)aswellasconcentricity.
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