To Create a Symmetric Dimension (AutoCAD Mechanical Toolset)

1. Click Home tabDimension panelPower Dimension drop-downMultiple Dimension. Find
2. In the Automatic Dimensioning dialog box, Shaft/Symmetric tab, from the Type list select Symmetric.
3. Verify that the Display dimension text editor for every dimension check box is cleared.
4. Click OK.
5. Select the objects to dimension, and press ENTER.
6. Select the centerline (1).
7. Specify the dimension line location (2).
8. Press ENTER.