To Add Tolerance to Dimensions (AutoCAD Mechanical Toolset)

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.