With this screen you will find a precise display of centimeters and inches on your Android Phone. You will have the ability to use the same scales on different machines with different pixels and different screen sizes.

We afford setting of any screen sizes in the setting menu, so that you can set the screen size and the program can recognize the dpi (dot percent inch ) automatically. The application will display the ruler based on the screen dpi and the screen size. You can test it with a real ruler and will find it is precise.

You can select your screen size by clicking the setting button. It can adjust any screen size to your Android Phone. Click “OK” to finish adjusting the screen size.

Note: If you do not know the screen size, you may ask the manufacturer of your Android Phone to get it.

To enlarge your ruler length, you can click the "Diagonal Ruler" button to achieve.