Question

Distinguish between four figure
grid system and six figure grid system

Answer 1

Answer:

4 FIGURE by writing easting and Northing

6 FIGURE by writing easting and Northing and scale divide by 2

Answer 2

A 4-figure grid reference contains 4 numbers. For example, you might be given the number 3422. The first two numbers are called the easting, which is the number you would look for at the bottom of the map. The second two numbers are called the northing and represent the numbers you would look for on the side of the map. Where these two sets of numbers intersect is the bottom, left corner of the square where you would find what you are looking for.

EENN

Your grandfather gives you the 4-figure grid reference 1331. The intersection of these grid lines is the bottom left corner of the square where the surprise is. Looking at the bottom green numbers, you find the easting number 13. Then you move up (northward) to the horizontal red line representing the purple number 31, which is the northing. Of the four squares on this map, our square is at the top right (containing the North arrow). This is a big help in locating the street intersection where your surprise is, but it's still a big area to cover. We can get more specific if we use a 6-number grid.

4grid

6-Figure Grid Reference

A 6-figure grid reference contains 6 numbers which gives us an even more precise location inside the box given by the 4-figure number. Inside each box, imagine 10 tick marks along the eastings and 10 tick marks along the northings. These marks are generally not provided on maps. Let's interpret a 6-figure number, 344223.

The first two numbers are the easting, which is the same as in the 4-number grid. The third number represents how many tenths you need to move east from the easting value. In our 6-number example, our third number is 4, which represents four-tenths more to the east. In other words, go east just shy of half-way to the next easting.

The fourth and fifth numbers are the northing value, which is the same as in the 4-number grid. The last number represents how many tenths you need to move north from the northing location given. In our 6-number example, the last number is 3 which represents 3/10 more to the north of the northing value. In other words, go north roughly a third of the way to the next grid line.