The accurate way to measure on a screen, at any angle in pixels, inches or any unit.
Posted in the Screen Calipers Forum.
Screen Calipers bouncing around and not useful
I purchased the full program and found the calipers bouncing around. I have Win10 on a surface pro. I turned off everything and still the issue continued. Finally when I pulled my monitor cord for my extended screen it worked normally.
Must be too much for the graphics card to do both displays and have this program work correctly.
Hope this helps others.