Bubble Level - Spirit Ruler Meter Tool is an application for measuring the angle between the ground and a horizontal or vertical surface. The application is easy to use and offers a variety of measurement options. It is compatible with both smartphones and tablets.

To use the application, first, you need to place your smartphone or tablet on a flat surface. Next, you need to make sure that the angle you want to measure is between 0° and 180°. You can use the application with your smartphone or tablet in four different modes: level, up, down, and plum. The mode you want to use depends on the angle you want to measure.

To increase the accuracy of the measurements, you can use the application with a digital or analog compass. The accuracy of the measurement depends on the speed of your movement and the angle you want to measure.

To save your measurements, you can use the application to create a graph of the angle you measured.