The Chinese compass
photo of a replica Chinese compass in Musée des Arts et Métiers, collection CnAM 7460; Wikimedia Commons category documents it as a replica, 19th-century-before-1866 reconstruction. Image author Rama; CC BY-SA 3.0-fr / 2.0-fr (and CeCILL); https://commons.wikimedia.org/wiki/Category:Chinese_compass_-_CnAM_7460. Clearly presented as a later reconstruction, not an excavated Song artifact.
In Song-dynasty China, a magnetized needle was first described in texts about divination and finding direction, while early twelfth-century evidence indicates sailors used a compass. These are important early records of the compass, but they do not establish exactly when the instrument itself was invented. European references appear in the late twelfth century; the route by which the technology may have traveled from China to the West remains debated, so it is not settled.

