Changing the Attachment Point or Length of Dimension Extension Lines To change the attachment point or length of dimension extension lines: Select a dimension. Handles are displayed at the attachment end of the extension lines. The pointer changes to when it is over a handle. Drag a handle to the desired position or to a vertex.If you choose a vertex, the default extension line gap is used. In sketches, the value of the dimension changes to reflect the new attachment point. Parent topicDimension Extension Lines Related concepts Example: Smart Extension Lines Example: Dimension Line Terminology Attaching Dimension Extension Lines Jogging Extension Lines Related tasks Making Slanted Dimension Extension Lines Flipping the Direction of Dimension Leaders