Create Dimensions with Oblique Extension Lines
 
 
 

You can create dimensions with extension lines that are not perpendicular to their dimension lines.

Extension lines are created perpendicular to the dimension line. However, if the extension lines conflict with other objects in a drawing, you can change their angle after the dimension has been drawn.

New dimensions are not affected when you make an existing dimension oblique.

To make extension lines oblique
Commands
System Variables
Utilities
Command Modifiers