Grid references on OS maps

How to give four figure grid references

A grid reference is a way of giving a position on a map

Grid line numbers are at the top and bottom 31 32 33 34 35 36 So this is Easting 35 Grid lines called Eastings are from top to bottom Say it as ‘three five’, not as thirty five. 31 32 33 34 35 36

Grid lines from side to side are called Northings Grid line numbers are along both sides 27 26 25 24 23 22 27 26 25 24 23 22 Say it as ‘two four’, not twenty four So this is Northing 24

31 32 33 34 35 36 27 26 25 24 23 22 27 26 25 24 23 22 A What is the four figure grid reference for this square? 31 32 33 34 35 36

31 32 33 34 35 36 Find the line along the left of the square. A This is Easting 34 31 32 33 34 35 36

Find the line along the bottom of the square. 27 26 25 24 23 22 27 26 25 24 23 22 This is Northing 25 A

The four figure grid reference is 3425 A Easting 34 Northing 25 Say it as ‘three four two five’

Remember Find the square Look at the line on its left (Easting) Find its number from the top or bottom Look at the line along its bottom (Northing) Find its number from either side Write the Easting number, then the Northing number

What are the four figure grid references for the squares with these symbols? 31 32 33 34 35 36 27 26 25 24 23 22 27 26 25 24 23 22 3124 3223 3525 3522 3325 All right? Some wrong? 31 32 33 34 35 36 Double click icons

How to give a six figure grid reference

31 32 33 34 35 36 The church is in square 3224, but where exactly is it? 27 26 25 24 23 22 27 26 25 24 23 22 31 32 33 34 35 36

31 32 33 34 35 36 27 26 25 24 23 22 27 26 25 24 23 22 It is nearer to 33 than to 32 But how ‘near’ is nearer? We need to look more closely. It is nearer to 24 than to 25 31 32 33 34 35 36

Look closer at one grid square

328 330 320 250 25 Draw lines between the main grid lines A six figure reference at 328243 243 Say it as ‘three two eight, two four three’ 240 24 32 33

Remember Find the point in the square Find the four figure grid reference See how far the point is from the line on the left of the square to the line on the right See how far the point is from the line along the bottom of the square to the line along the top

Where are these symbols? 320 330 250 250 325243 326247 327240 330248 322246 240 240 All right? Some wrong? 320 330 Double click icons

Remember 32 This line first 3224 24 Then this line

Remember 32 327 This line first 246 Then this line 24 Church at 327246