A free program for Android, by Smart Tools co..

Smart Ruler is an app that allows you to measure the length of an object by touching the screen. It is one of the most accurate measuring apps. The app has an easy-to-use interface and is very easy to use. It can measure the length of an object, such as a pen, pencil, or ruler. The object is placed on the screen, and the user touches the screen to adjust the length. It is an effortless and easy-to-use application. The user can change the accuracy with the [Calibration] menu. Download the [Smart Ruler Pro] and [Smart Tools] packages now on your Android device!