ClickFormat
menu Dimension Style.At the Command prompt, enter
dimstyle.
In the Dimension Style Manager, select the style you want to
change. Click Modify.
In the Modify Dimension Style dialog box, Tolerances tab, under
Tolerance Format, select a method from the Method list, and then do
one of the following:
If you select Limits, enter upper and lower tolerance deviation
in the Upper Value and Lower Value boxes.
If you select Symmetrical tolerances, Lower Value is not
available, because you need only one tolerance value.
If you select Basic, enter a value in Offset from Dim Line (on
the Text tab) to represent the gap between the text and its
enclosing box.