An Earth inductor compass helps you find your direction using the Earth's magnetic field. The Earth is like a really big magnet with two ends, the north and south poles. The compass has a special part called an inductor that can feel the magnetic field of the Earth. When you hold the compass and move it around, the inductor inside can detect the direction of the Earth's magnetic field and show you which way is north, south, east, or west. So, if you ever get lost, you can use the Earth inductor compass to figure out which way to go to get back on track.