Hardware Reference
In-Depth Information
You can see not only the altitude, but the temperature and pressure as well. Now, this alti-
tude is not an absolute value, but a relative one. It will change with a change in weather,
as the barometric pressure is dependent on weather pattern changes. This particular read-
ing is, therefore, really only useful when you want to measure the relative changes in alti-
tude, for example, when you want to know how far your flying project has either gone up
or done from a reference position.
