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Gruler
May 26, 2018
Simple customizable GTK screen ruler
Gnome Screen Ruler is an on-screen ruler for measuring horizontal and vertical distances in any application. It has the following features
* Horizontal and vertical display
* Multiple units pixels, inches, centimeters, picas, points,
percentage
* Configurable colors and font
* Can be set always-on-top
* Measurement lines track mouse cursor to help measure
anything on screen
* Move and resize via click-and-drag with the mouse
* Align with other windows while dragging hold Shift key
* Move using the keyboard for precision arrow keys
* Resize using keyboard Alt+arrow keys
* Speed up keyboard operations hold Shift key
WWW https//gnomecoder.wordpress.com/screenruler/