# GD&T Symbols

 Straightness Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: FormDefinition: Straightness is a condition in which the elements of a surface or its axis are in a straight line. Flatness Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: Form Definition: Flatness is a condition in which all elements are in one plane. Circularity Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: FormDefinition: Circularity refers to a condition of a circular line or the surface of a circular feature where all points on the line or on the circumference of a plane cross section of the feature are the same distance from a common axis or center point. Cylindricity Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: FormDefinition: Cylindricity is a condition of a surface in which all points of the surface are the same distance from a common axis Profile of a Line Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: ProfileDefinition: A Profile of a Line tolerance may be directed to a line of any length or shape. Profile of a Surface Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: ProfileDefinition: Profile of a Surface indicates a tolerance zone having the same form as the basic surface, with a uniform width equal to the specified tolerance within which the entire surface must lie. Perpendicularity Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: OrientationDefinition: Perpendicularity is the condition of a surface at 90° to a datum plane or axis. Angularity Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: OrientationDefinition: Angularity is a condition of a surface or axis at a specified angle (other than 0° or 90°) for a datum. Parallelism Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: OrientationDefinition: Parallelism is the condition of a surface equidistance at all points from a datum plane. Symmetry Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: LocationDefinition: ? Position Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: LocationDefinition: Position defines a zone within which the center, axis, or center plane of a feature or size is promitted to very from the true position. Concentricity Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: LocationDefinition: ? Circular Runout Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: Type of Tolerance: RunoutDefinition: Circular Runout provides control of circular elements of a surface. The tolerance is applied independently at any cross section as the part is rotated 360°. Total Runout Symbol: ? Type of Tolerance: _____ Definition: _____ Symbol: T.o.T.: RunoutDefinition: Total Runout concerns the runout of a complete surface, not merely the runout of each circular element. Authorjoshuacassel ID191531 Card SetGD&T Symbols DescriptionGD&T Symbols with definitions Updated2013-01-06T21:09:49Z Show Answers