Anyone can read Universal Transverse Mercator (UTM) grid references quickly and accurately.

**Diagram - UTM grid**

- First, find the number of the grid line to the
**West**of . This is observed to be 91. - Now, estimate the number of tenths is to the
**East**of this grid line. This is observed to be about 6, and when combined with the figure determined in Step 1, gives the**EASTING**as 916. - Next, find the number of the grid line
**South**of This is observed to be 94. - Now, estimate the number of tenths is
**North**of this grid line. This is observed to be about 4, and when combined with the figure determined in Step 3, gives the**NORTHING**as 944. - By combining the Easting and Northing, the map reference obtained for is therefore 916944.

**Note:** Such map references repeat every 100 kilometres. You should quote the map number if there is a chance of ambiguity.

## UTM References on 1:250 000 Scale Maps

**Diagram - 1:250 000 UTM grid (Note, example is not drawn to scale)**

When using a UTM coordinate from a 1:250 000 scale NTS map, be sure to give the letter of the large square concerned. For example, the reference of the church on the map to the right is NT 9393

## Using a Roamer

A roamer is a device for reading UTM coordinates on topographic maps. Use a roamer as illustrated below

**Diagram - Using a roamer on a UTM grid. (Note, example is not drawn to scale)**

Always measure over to the East and then up to the North. In other words, find the Easting, then the Northing.

Further Reading: Find out more about the National topographic System, how to navigate with a topographic map, Map Scale, and UTM Projection used on NTS maps.

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