Model-Based Definition > Model-Based Definition > Creating Various Annotation Types > Tolerances > Working with Dimensional Tolerances > Dimensional Tolerance Basics > About Basic Dimensions
About Basic Dimensions
A basic dimension is a theoretically exact dimension and does not have tolerances. The following figure shows how Creo Parametric indicates basic dimensions in a model. You can create basic dimensions by selecting the Basic option from the Tolerance list in the Dimension tab.
Dimension in nominal format
Dimension after changing into basic