On ruler Android App

The description of On ruler: On ruler is a helpful measuring tool for quick measure of small object 39 s length. It helps you to measure the dimension of objects conveniently and accurately with your phone at anytime and anywhere. It combines two important ruler measuring modes in one app which is 2 lines ruler and 4 lines ruler. You can also switch the ruler 39 s length unit between millimeter and inch by a click. On ruler is smart and easy to use. You can measure the length and width of any objects that in the range of your screen size by simply place it on the device 39 s screen and move the line limiters one after another. The dimensions of the object (width length and area) will shows on the screen automatically. To measure objects that larger than your device 39 s screen size you can use on measuring tape on 2d camera measure or on 3d camera measure (free measuring tools). For perfect accuracy you will be requested to do calibration at the first time you open the application..