A homing device invented by the Elder Magi to enable their flying ships to navigate in the dark. It is sensitive to the vibrations given off by Korlinium crystals. A globe the size of a large melon. There is crystalline material wrapped around globe and thick crinkled wires with calibrated strips of brass attached to some of them. It is used for piloting flying ships. It detects the directions of the magical flux lines that encircle the planet and is able to pinpoint a location to within a mile. It is also attracted to Korlinium which disrupts the magical flux lines.