Aligning Dimensions
Dimensions can be aligned with other dimensions. First, you identify an existing dimension and align the new dimension above, below, or adjacent to it.
Aligning Dimensions to Other Dimensions
To align a dimension:
1. Click Modify and then, in the Annotate group, click the arrow next to 
Modify.
Modify.2. Click 
Move Text & Line.
Move Text & Line.3. Click the dimension you want to move (point 1).
4. Click the reference dimension (point 2).
5. Drag the cursor to the new location.
6. Release the mouse button.
7. Repeat for other dimensions (point 3).
Aligning of dimensions applies to single dimensions and not group dimensions (a group of dimensions cannot be boxed because each dimension needs a specific shift-vector). Additionally, aligning dimensions does not apply to non-linear dimensions such as:
• Diameters
• Radii
• Arcs