Grid referencing systems, Often used in military applications, let on users to place a specified, blocked reduce of a topographical map sectioned off into grids. These systems vary in rightness; essentially, the also digits in a transaction, the better its validity. The military six-digit discrepancy offers correctness of 100 meters. Divide the bottom of the block into 10 imaginary sections numbered zero to nine. Some maps provide these sections for you already. Follow these imaginary marks to the right until you find the one numbered the same as the last digit in your eastings. In the example, you would look for the number three.5. Section off the left side of the block into 10 evenly divided, numbered sections, and find the one that corresponds to the last digit of your northings. In the example, you would look for line number six. You should now have located the bottom left corner of a smaller 100-meter-square block, referenced by the six-digit coordinate.
Rupture down the six digits into two sets of three. The beginning place represents your "eastings," or grid lines measured off to the fitting. The moment locate represents your "northings," or grid lines measured up to the top of the map. As an condition, provided the coordinate was 123456, your eastings would be 123, and your northings would be 456. Grid reference maps always bow with grid lines numbered 000 000 on the backside left.
2. Come next the grid numbers to the good until you treasure the cipher comparable to the elementary two digits of your eastings. In the object, you would peep to the fair for the grid line numbered 12.
3. Contemplation up the grid border alike to the inceptive two digits of your northings. In the example, you would move up the map until you found the northern grid line 45.
The point discovered with the four digits already used puts you at the bottom left of a grid section measured 1,000 meters square; this is the block you want. With the six-digit system, you can achieve greater accuracy within that block.
4. This way you can allot a cut that measures 100 meters square.
