Definition: The term "anemometrographically" comes from Greek, meaning "analyzing with a magnetic compass," which describes how to measure magnetic field variations in an object through a magnetometer. A magnetic compass measures the direction of magnetic north by rotating around a magnet. If you use a magnetic compass to measure the magnetic field variation within a magnetic needle or coil, it will show the strength and direction of any magnetic fields that are present at different points on your object. This is called "anemometrographically."