Transform your smartphone into a measuring tool with the Arrim ONE Professional AR Measuring Device. This multi-functional device allows you to measure the dimensions of straight lines, circles, angles, and curves by using your smartphone. Likewise, it also works as a leveling and dividing tool. There are also additional functions, including unit conversion and continuous measurement. The device supports both metric and imperial unit system, enabling you to measure in inches, feet, yards, centimeters, millimeters, and meters. You can also select the maximum precision. Just attach Arrim ONE to your phone to use the AR measuring device instantly. It only comes with one button for turning it on and off since the rest of the displays and controls are available on your phone.