The scale of a map allows a reader to calculate the size, height and dimensions of the features shown on the map, as well as distances between different points. The scale on a map is the ratio between ...

British mapping agency Ordnance Survey (OS) has released an easy-to-read map of terrain from the planet Mars. Open data published by Nasa was used to make the map, which has been posted on the OS ...

Reflecting worries that the French might invade, the first OS maps cover the mouth of the river Thames. This is the naval route to London and a highly vulnerable part of the country. The sheets that ...