Ruler pro

使用手机作为一个标尺。

Use your phone as a ruler. This Ruler app supports three types of scales: metric ruler, inch ruler, fractional ruler in inches. You can use a coin or a credit card to calibrate the scale, even if you don't have a real ruler handy!

ruler Pro Features:

- accuracy of measurement;

- easy to use;

- stylish design;

- simple calibration;

- set the units: cm, mm, inch;

Ruler Pro - is beautiful, functional and easy to use tool on every smartphone or tablet.