You can add a tolerance to the dimension text. Tolerance values can be added to tolerance tables for future use.
To add a new tolerance,
1. Click Annotation and then, in the Annotate group, click the arrow next to Linear or Circular. You can also click Angular in the Annotate group.
2. Click the appropriate linear or circular dimension
Dimension types under Linear or Circular respectively. The respective dialog box for the linear, circular, or angular dimension opens.
3. In the Tol Type list box, select one of the following:
None
Specifies no tolerance.
Basic
Specifies a basic (zero) tolerance.
Limit
Specifies an upper and lower tolerance limit.
Upper/Lower
Specifies an upper and lower tolerance.
Plus/Minus
Specifies a plus/minus tolerance.
4. Creo Elements/Direct Annotation extends the dimensioning menu with data entry fields in which to type the necessary tolerance values.
5. Type the required tolerance values, as explained below.
6. Complete the dimension operation.
The tolerance values you enter depend on the type of tolerance selected:
• Basic tolerance
This is zero tolerance; no value is required.
• Limit tolerance
Type values in the Limit 1 and Limit 2 data entry fields. Creo Elements/Direct Annotation assumes that both limit values are positive. If you require a tolerance to be negative, start the value with a negative sign (-).
• Upper/lower tolerance
Type values in the Upper and Lower data entry fields. Creo Elements/Direct Annotation assumes that both upper and lower values are positive. If you require a tolerance to be negative, start the value with a negative sign (-).
• Plus/Minus tolerance
Type a value in the PM Value data entry field. The tolerance must be a numerical value.
To clear a tolerance, in the Tol Type box, select None. You can store tolerance values in a table for later use.
Linear or 
Circular. You can also click 
Angular in the Annotate group.