Detailed Drawings > Detailed Drawings > Annotating the Drawing > Geometric Tolerances > Example: Geometric Tolerance Classes and Types
Example: Geometric Tolerance Classes and Types
Class
Type
Symbol
Reference Entity
Form
Straightness
Surface of revolution, axis, straight edge
Flatness
Plane surface (not datum plane)
Circularity
Cylinder, cone, sphere
Cylindricity
Cylindrical surface
Profile
Line
Edge
Surface
Surface (not datum plane)
Orientation
Angularity
Plane, surface, axis
Parallelism
Cylindrical, surface, axis
Perpendicularity
Planar surface
Location
Position
Any
Concentricity
Axis, surface of revolution
Symmetry
Any
Runout
Circular
Cone, cylinder, sphere, plane
Total
Cone, cylinder, sphere, plane