+A **grid reference** is a geographical coordinate system used to pinpoint locations on a [Map](/wiki/map). It overlays a grid of numbered lines onto a map projection, allowing precise [Navigation](/wiki/navigation) by specifying a unique alphanumeric code for each square or point. This simple method helps identify positions with clarity and ease.
+## See also
+- [Coordinate System](/wiki/coordinate_system)
+- [GPS](/wiki/gps)
+- [Cartography](/wiki/cartography)
... 1 more lines