Ruler HD - iPad App
With Ruler HD you can measure all the the small things which fit on the screen of your iPad.
How it works
Just adjust the size of the white area to the size of the item you want to measure. Ruler HD will show you the width, the height and the diagonal of the item in centimeters or inches.
Do NOT put heavy, sharp or other dangerous things on your iPad screen! This will damage your iPad. We will not be responsible for any damage!