Mastering Map Reading: Understanding 6 Figure Grid References

Mastering Map Reading: Understanding 6 Figure Grid References

Mastering map reading skills is an essential part of any outdoor activity, whether it’s hiking, trekking, or mountaineering. While many people depend on GPS and other electronic devices for navigation, it’s always best to carry a map and learn to read it. This way, you’re self-sufficient, have an alternative method of navigation, and can enjoy the thrill of exploring the outdoors without worrying about battery life.

There are several components to map reading, but one of the most critical elements is understanding grid references. Grid references are a way to pinpoint your location on a map with a high degree of accuracy. The Ordnance Survey (OS) National Grid system, used in the United Kingdom, is a six-figure version of this system.

In this article, we’ll dive into the intricacies of 6-figure grid references and how to master them.

What are 6 Figure Grid References?

A six-figure grid reference is a precise way to define a location on a map. The system divides the grid into boxes, each of which is 100 meters wide and 100 meters high. These boxes are then further divided into ten smaller squares, each of which is ten meters wide and ten meters high.

To determine a six-figure grid reference, you must first locate the four-figure grid reference (also known as the eastings and northings) of the bottom left corner of the box in which the location falls. The first two figures indicate the eastings, and the last two denote the northings. Once you have the four-figure grid reference, you can determine the location’s exact position by dividing the ten smaller squares.

For example, a six-figure grid reference of a location in the UK would look like this:

SE 12345 67890

The first two letters (SE, in this case) identify the 100km by 100km square in which the location falls. The next two numbers (12, in this case) indicate the eastings, and the last three numbers (345, in this case) denote the northings. Finally, the two numbers after the comma (678, in this case) indicate the position’s exact location within the ten smaller squares.

Why are 6 Figure Grid References Important?

Six-figure grid references are an essential aspect of map reading, particularly in areas without clear landmarks or topographical features. With the help of a six-figure grid reference, you can pinpoint precise locations on a map, which can be crucial for planning a safe and efficient route or communicating your location to others.

Moreover, six-figure grid references can help you estimate distances between two points on a map. For example, if you know the six-figure grid references of two locations, you can calculate the exact distance between the two locations using a straightforward formula. This information is essential for trip planning and navigation.

How to Use 6-Figure Grid References

To use six-figure grid references, you first need to locate your current position on the map. This can be done using a compass, GPS, or by using visible landmarks to cross-reference the map. Once you know your location, you need to determine the four-figure grid reference of the box in which you find yourself.

To find the four-figure grid reference, look for the easting and northing lines that intersect the location on the map and read off the two numbers. For example, if your location falls where the easting line 45 and the northing line 57 intersect, your four-figure grid reference is 4557.

Once you have the four-figure grid reference, locate the box on the map and calculate the six-figure grid reference by counting the number of smaller squares eastward and northward from the bottom left corner of the box. For example, if the location falls three squares eastward and four squares northward from the bottom left corner of the box, the six-figure grid reference would be 455734.

In Conclusion

Mastering map reading is a skill that takes practice, patience, and perseverance. However, by understanding the system of 6-figure grid references, you can become more self-sufficient and confident in your navigation abilities. Always remember to carry a map, know your current position, and remain aware of your surroundings. With these skills, you’re ready to embark on your next adventure.