In order to pinpoint an exact spot on a map, you’ll need to know how to give a grid reference. Most large scale maps have numbers that run around the border, from left to right, and top to bottom.

Secondary resources > KS3/GCSE Geography > Maps and navigation This clip demonstrates how to use co-ordinates or grid references to calculate position on a map.

Four-figure grid references are found as follows: First, write the eastings number of the bottom left corner of the square (eastings are found along the bottom of the map).

A full grid reference needs two six-digit numbers, giving a position to the nearest metre. The grid reference of the spire of Dublin in the old system is (315904, 234671).