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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.
Millimeter is a simple free screen ruler app.
Know the exact size and position of any element with this screen ruler.
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.