Example: Geometric Characteristic Symbols

The following table shows the geometric characteristic symbols used in creating geometric tolerances. Unless otherwise stated, these symbols adhere to both ANSI and ISO standards.

Symbol Characteristic Type
 PositionLocation
 Concentricity
or coaxiality
Location
 SymmetryLocation
 ParallelismOrientation
 Perpendicularity Orientation
 AngularityOrientation
 CylindricityForm
 FlatnessForm
 Circularity
or roundness
Form
 StraightnessForm
 Surface profile Profile
 Line profileProfile
 Circular runout Runout
 Total runoutRunout