#GetOutside champion and naturalist Steve Backshall continues his series of map reading videos with Ordnance Survey by explaining how to work out a four-figure grid reference.
These look like this: SU 24 10
With a 4-figure grid reference you can find an area on a map, or take note of a location. Steve shows how you can calculate a 4-figure grid reference from an OS Map, and define a part of a map of one square km.
If you want more accuracy, there are also 6-figure grid references ? see the follow up video at https://www.youtube.com/watch?v=FXuo_
Part of a set of videos with Steve Backshall with an introduction to map reading and navigation skills: https://www.youtube.com/playlist?list
Science & Technology