To Add Tolerance to Dimensions (AutoCAD Mechanical)

1. In the drawing area, select the dimension you want to edit. The Power Dimensioning Ribbon Contextual Tab displays.
2. Click Power Dimensioning tabFit/Tolerance panel Tolerance. Find
3. Click Power Dimensioning tabFit/Tolerance panel Method drop-down.
4. Select the desired tolerance method.
5. Enter a value for the upper and lower deviations.
6. Press ESC.