AutoCAD 2008 User's Guide > Annotate Drawings > Dimensions and Tolerances > Use Dimension Styles > Control Dimension Values > 
Round Off Dimension Values
Concept Procedure Quick Reference
 
 
 

You can round off the numeric values in dimensions and lateral tolerances.

You can round off all dimension values except those for angular dimensions. For example, if you specify a round-off value of 0.25, all distances are rounded to the nearest 0.25 unit. The number of digits displayed after the decimal point depends on the precision set for primary and alternate units and lateral tolerance values.