Diameter dimensions are useful, for example, if you want to show the diameter of the top view of a cylinder as shown below:
To create a Diameter dimension on a circle or line:
- Click Annotation tab > Dimension panel > Radial > Diameter.
The Dimension toolbar is displayed. This can be used to edit attributes of the new dimensions, such as the annotation text.
- Select an arc or a line, or enter two positions.
- Move the cursor and click to specify the position of the annotation and add the dimension.