Location tolerances limit the location error of a feature’s axis relative to a specified datum (a perfectly flat and straight plane or line), or a feature’s median points relative to its axis. The table shows the three location tolerances that are available and their associated symbols.
GD&T GEOMETRIC CHARACTERISTIC SYMBOLS
| Tolerance Type | Characteristic | Symbol | |
|---|---|---|---|
| For related features | Location | Position | j |
| Concentricity | r | ||
| Symmetry | i |