86t2ーExcerpt from JIS0021（revised in 1998）ーtφtttttAACAAAAAttiDBφtφ0.08CABThe point shown by the arrow φt lacnhceTataDs・tcudorPDatum plane DDatum plane CDatum plane ADatum plane BDatum plane ATolerance surfaceMeasuring planeWhere symbol φ is attached before the numerical value indicating a tolerance zone, this tolerance zone is a zone in a cylinder of diameter t. The tolerance zone is a zone held between two parallel planes a distance t apart.The tolerance zone in the considered plane is a zone between two concentric circles a distance t apart.The tolerance zone is z zone contained between two coaxial cylinder surfaces a distance t apart.The tolerance zone is a zone held between two parallel planes parallel to the datum plane and a distance t apart from each other.A perpendicularity tolerance zone is defined by two parallel planes perpendicular to the datum axis and a distance t apart from each other.The tolerance zone is a zone within a cylinder of diameter t, whose axis agrees respectively with the datum axial straight line C, A and B at the theoretically exact location.The tolerance zone is a zone within a circle of diameter t having its center at datum point A.The tolerance zone is a zone held between two parallel planes a distance t apart from each other and arranged symmetrically about the datum median plane.The tolerance is a zone between two concentric circles whose centers agree with the datum axial straight line on any measuring plane normal to the datum axial straight line and which are a distance t apart from each other in the radial direction.φ0.080.080.030.10.01D0.08A100BEach cross-sectionφ0.1A0.08A0.1AーBThe run-out in the radial direction of the cylinder surface shown by the arrow of the leader line shall not exceed 0.1mm on any measuring plane normal to the datum axial straight line when the cylinder is rotated by one rotation about the datum axial straight line A-B.Where a tolerance frame is connected to the dimension showing the diameter of a cylinder, the axis of the cylinder shall be contained a cylinder of φ0.08mm diameter.This surface shall be contained between two parallel planes 0.08mm apart.The circumference in any section normal to the axis shall be contained between two concentric circles 0.03mm apart on the same plane.The considered surface shall be contained between two coaxial cylinder surfaces 0.1mm apartThe surface shown by the arrow of the leader line shall be contained between two planes parallel to the datum plane D and 0.01mm apart from each other in the direction of the arrow of the leader line.The surface shown by the arrow of the leader line shall be contained between two planes perpendicular to the datum axis and 0.08mm apart from each other in the direction of the arrow of the leader line.of the leader line shall be contained within a circle of 0.08mm diameter having its center at the theoretically exact location respectively from the datum straight line C, A and B.The surface shown by the arrow of the leader line shall be contained within a cylinder of 0.1mm diameter whose axis agrees with the datum median plane A.The median surface shown by the arrow of the leader line shall be contained between two parallel planes 0.08mm apart from each other and arranged symmetrically about the datum median plane A.Orientation toleranceKind of toleranceSymbolStraightness toleranceFlatness toleranceForm toleranceCircularity toleranceCylindricity toleranceParallelism tolerancePerpendicularity tolerancePositional toleranceCoaxiality tolerance or concentricity toleranceLocation toleranceSymmetry toleranceCircular run-out toleranceRun-out toleranceDefinition of tolerance zoneExamples of diagrammatical indicationand its interpretation1127Indications of Geometrical Tolerance on Drawings
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