Screen Ruler - Help

Keyboard Actions

Arrow keysMove the ruler by one pixel.
Ctrl + Arrow keysMove the ruler by five pixels.
Shift + Arrow keysResize the ruler by one pixel.
Ctrl + Shift + Arrow keysResize the ruler by five pixels.
Alt + Arrow keysDock the ruler to screen boundaries.
'L'Set marker at current length.
'C'Remove the first custom marking line.
ESCExit Screen Ruler/ Help window.
See more keyboard actions in context menu.

Mouse Actions

Click on a position where a marker is setOpen dialog to view/ delete marker.
Double-click on rulerSet marker at the clicked position.
Mouse wheelResize the ruler.

https://screenruler.sourceforge.io