Smart Ruler в Android Market

Smart Ruler (v. 1.0) Разработано Android Boy

You can measure the length of small object with your smart phone. And, You can calibrate your device.

Step 1. Put the Object on the screen of your smart phone.
Step 2. Adjust the left of the Object to the left of the screen.
Step 3. Touch the screen, and adjust the right of the Object with a red line.