Following are some of the 14 primary symbols used in GD&T:
Angularity
Circularity
Concentricity
Cylindricity
Flatness
Parallelism
Perpendicularity
Position
Profile
Profile of a line
Runout
Straightness
Symmetry
![total_runout total_runout](/machine-shop/assets/images/GDT/total_runout.gif)
Following are some of the 14 primary symbols used in GD&T:
Angularity
Circularity
Concentricity
Cylindricity
Flatness
Parallelism
Perpendicularity
Position
Profile
Profile of a line
Runout
Straightness
Symmetry