Clicking with the mouse button on the ruler will pop up a context menu, with the following entries:
This submenu contains entries that allow you to change the orientation of KDE Screen Ruler
- → (N)
Turns KDE Screen Ruler so the ruler is horizontal, and the measurements are on the top (North) of the ruler
- → (E)
Turns KDE Screen Ruler so the ruler is vertical, and the measurements are on the right (East) of the ruler
- → (S)
Turns KDE Screen Ruler so the ruler is horizontal, and the measurements are on the bottom (South) of the ruler
- → (W)
Turns KDE Screen Ruler so the ruler is vertical, and the measurements are on the left (West) of the ruler
- → (R)
Turns the ruler 90 Degrees to the right. For example, if it is oriented South, it will rotate to be oriented West.
- → (L)
Turns the ruler 90 Degrees to the left. For example, if it is oriented West, it will rotate to be oriented South.
This submenu contains entries that allow you to change the length of KDE Screen Ruler
- → (Ctrl+S)
Makes KDE Screen Ruler short - about 385 pixels long.
- → (Ctrl+M)
Makes KDE Screen Ruler a medium length - about 640 pixels long.
- → (Ctrl+T)
Makes KDE Screen Ruler long - about 960 pixels in length.
- → (Ctrl+F)
Makes KDE Screen Ruler the same size as your screen width.
- →
Opens a dialog to enter the size in pixel.
This option lets you set the ruler scale to Right to Left (D), Center Origin (C), Offset (O) and Percentage.
This menu item displays a slider to change the opacity of KDE Screen Ruler.
The Configure Shortcut dialog allows you to assign shortcuts to KDE Screen Ruler actions, and configure the shortcuts already assigned.

In this dialog you can change the background color and font, enable rotation and close buttons on the ruler and enable the tray icon.
- (Ctrl+C)
Copies the HTML color code of the color currently under the circle to the clipboard.
- → (F1)
Invokes the KDE Help system starting at the KDE Screen Ruler help pages. (this document).
- → (Shift+F1)
Changes the mouse cursor to a combination arrow and question mark. Clicking on items within KDE Screen Ruler will open a help window (if one exists for the particular item) explaining the item's function.
- →
Opens the Bug report dialog where you can report a bug or request a “wishlist” feature.
- →
Opens a dialog where you can edit the Primary language and Fallback language for this application.
- →
This will display version and author information.
- →
This displays the KDE version and other basic information.
- (Ctrl+W)
Hides KDE Screen Ruler. It can be shown again using the icon in the system tray. The context menu displays this item only when Show tray icon is checked in the settings dialog.
- (Ctrl+Q)
Quits KDE Screen Ruler