Ruler is a tool which make your iPhone and iPad as an accurate ruler.
-- support all device --
- iPhone5, iPhone4s, iPhone4,iPhone3GS
- iPad mini, iPad4, iPad3, iPad2, iPad
-- Your iphone is just a real ruler --
- It support cm and its cm Ruler
- It support inch and its inch Ruler too.
-- Easy to use --
- One side is cm ruler. The other side is inch ruler
- Two figure can walk with drag. Its easy for alignment with ruler
- Two figure can walk with drag. They can tell their coordinate
- Two figure can walk with drag. They can display the distance between them