5.25. Show Rulers
The Show Rulers command enables and disables displaying the rulers. It may be useful to disable them if you are working in full-screen mode.
You can set the default for the rulers in the Image Window Appearance dialog.
5.25.1. Activating the Command
You can access this command from the image menubar through View → Show Rulers,
or by using the keyboard shortcut Shift+Ctrl+R.