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Measure objects.
Get the size of any item on the screen.
Add a semi-transparent ruler with keyboard shortcuts to your desktop.
Know the exact size and position of any element with this screen ruler.
Millimeter is a simple free screen ruler app.
Measure distance between any points on your desktop.
Measure anything on your screen in customizable measuring units.
Measure anything on your screen.
This app displays a ruler on the screen.