# Devices Used to Measure Angles: Which Ones Did You Know About?

The measurement of angles is not restricted only to geometrical figures, it is equally important in other scientific applications and fields too. This ScienceStruck article takes a closer look at the basic devices used to measure angles.

In geometry, an angle is the space between two lines, rays, or planes intersecting each other. The space is measured in degrees and called the angle of those two intersecting geometric figures. Now, the measurement of angles find wide applications in our surroundings, right from ensuring the wall of our house or room is exactly vertical to angle of the satellite dish installed on our homes.

But there aren't many devices used in the metric system to measure angles, because if there were more, each measurement would have different results and that would cause confusion. Therefore, to avoid this confusion, there are usually three main devices used for this purpose.

As we know, we can observe angles all around us of various degrees ranging from 0 to 360. The measurement of angles is necessary also to measure the heights and lengths of certain locations. Here are the three basic devices used to measure angles.

**Devices for Measuring Angles**

**Protractor**

**Hand Squares**

*"carpenter's square"*is also very well-known and is actually a metal triangle. Other than these, the set squares which are used by students to study their academic geometry in mathematics are also great devices.

**Compass**

There are some more devices used for measuring angles, and they are:

- Navigational Plotter
- The Sextant
- The Theodolite
- Miter Saw
- Goniometer
- Inclinometer