Symbols for Geometrical Tolerances | ||
| ||
Tolerance Types
This reference lists the available tolerance type symbols for geometrical tolerances.
| Tolerances | Characteristics | Symbol | Datum needed |
|---|---|---|---|
| Form | Straightness |
|
No |
| Flatness |
|
No | |
| Roundness |
|
No | |
| Cylindricity |
|
No | |
| Profile any line |
|
No | |
| Profile any surface |
|
No | |
| Orientation | Parallelism |
|
Yes |
| Perpendicularity |
|
Yes | |
| Angularity |
|
Yes | |
| Profile any line |
|
Yes | |
| Profile any surface |
|
Yes | |
| Location | Position |
|
Yes or no |
| Concentricity (for center points) |
|
Yes | |
| Coaxiality (for axis) |
|
Yes | |
| Symmetry |
|
Yes | |
| Profile any line |
|
Yes | |
| Profile any surface |
|
Yes | |
| Run-out | Circular run-out |
|
Yes |
| Total run-out |
|
Yes |
