A circle, graduated in degrees, printed on some charts or marked on the ground at an airport. It is used as a reference to either true or magnetic direction.
Source FAA Pilot/Controller Glossary · checked 2026-08-25
A circle, graduated in degrees, printed on some charts or marked on the ground at an airport. It is used as a reference to either true or magnetic direction.
Source FAA Pilot/Controller Glossary · checked 2026-08-25