Showing rulers
In UML visualization, you can show rulers in the diagram editor.
You must have a diagram open and active in the diagram editor.
To show rulers, right-click an empty space in a diagram; then click View > Rulers.
Note: When you turn on the rulers, the guidelines turn on simultaneously. You can drag the vertical and horizontal guidelines, which are anchored at the upper-left corner of the diagram editor, onto diagrams and then line up diagram elements to the guidelines.
Parent topic
Managing the grid and rulers
Related tasks
Customizing default settings for the grid and rulers in new diagrams
Showing the grid
Hiding the grid
Snapping diagram elements to the grid
Hiding rulers