You can measure length & width with your phone by downloading "Smart Ruler" app.
Measuring length and width is now easy. Download "Simple Ruler" app for you android phone and make your work easy.
Features:
Normal ruler, diagonal ruler and Protractor measures are included.
Measures objects in mm, cm, and inches.
Tap on left and right arrows to move ruler.
Turn you phone as ruler by downloading Free Ruler app for your Smartphone.