Ruler is an indispensable tool for anyone who needs to measure lengths and distances. It is an essential app for your phone and tablet and can be used to measure the length of a line, the distance between two points, the height of an object, the size of a circle, the width of a column, or the distance between two lines.

The Ruler is a tool for all of these measurements, and it is one of the best tools for measuring on a mobile device. It is a very easy tool to use, and it works on most Android devices.

The ruler has an interface that is very easy to use, and it can be used to measure lengths in inches and centimeters.