About Dimension objects

Last updated on Sep 11, 2025

Learn about dimension objects and Dimension tools that let you easily measure and plot dimensions such as distance, angle, and radius within your artwork.

Dimension tool

You can access the Dimension  tool from the toolbar. If you can't find it, select the Edit Toolbar  icon at the bottom of the toolbar, and drag the tool from the Modify section onto the toolbar. When you select the Dimension tool, a taskbar appears. The taskbar lets you easily switch between different tool types, such as Linear Dimension Angular Dimension , and Radial Dimension . These tool types let you plot linear, angular, and radial dimension types, respectively.

Dimension object

When you plot a dimension, a dimension object is what you get. A dimension object contains a dimension line, extension line, and dimension text.

Illustrator screenshot showing the Dimension object measuring 18 cm between two points, with labeled guides around a purple shape that shows each component of the Dimension object.
Know the parts of a dimension object and then adjust the settings.

A. Extension line B. Offset of dimension text C. Dimension text D. Dimension line E. Extension of extension line F. Offset of extension line