Google displays a series of translucent white latitudinal and longitudinal grid lines over its 3-D maps in some versions of Google Earth. The feature is handy if you're looking to find the GPS ...

Map symbols, direction and contour lines Learn about essential ... Measuring distances and grid references Grid references, distance and scale are key features of map reading.

Magnetic north marks the north-ward line to the magnetic North Pole. Langton Matravers makes map reading history after true, grid and magnetic north aligned The position of the magnetic North Pole ...