Generally speaking, you can’t fly a drone that’s more than 400 feet above the ground. If you want to fly it at an altitude of more than 500 feet, you have to get a special permit.
Most modern drones come with a built-in altimeter, which measures the surrounding air pressure. The altimeter’s a good indicator of the true altitude of the drone. However, the best way to measure it is to get a good sense of the surrounding terrain.
In addition, the Tesla field recorder is an excellent tool to measure magnetic disturbances in the air. These may be important to consider when flying a drone.
Another important rule to follow is to stay away from the controlled airspace. These include airports, military bases, and skyscrapers. Aside from the usual precautions, you should never fly a drone within 400 feet of a manned aircraft. This rule is also very flexible.
Most drones have a built-in altimeter, but they’re probably not doing a good job of demonstrating the maximum altitude that they can safely fly. Fortunately, most modern drones come with a built-in limiter, which prevents them from going above 400 feet.
There are also special permits you can obtain for testing the technical limits of a drone. These permits are usually required to carry out some form of research.
Although most drones have a built-in altimeter, the best way to measure the altitude of your drone is to get a good sense of the terrain.