Combining Size Dimensions and Geometric Tolerances To combine size dimensions and geometric tolerances: Open a model with size dimensions and geometric tolerances to combine. For example, you can combine the three dimensions into one. Ctrl + select the two size dimensions from left to right. Right-click and click Combine Dimension. The dimensions combine into one at the last selected dimension, with an instance count automatically added. When combining only geometric tolerances, right-click and click Combine Gtol. When combining geometric tolerances, the applied symbols, tolerances, and datums must be the same. Parent topicCombining Dimensions Related tasks Combining Location Dimensions