It is a method used to identify a specific area on a map.
The map is overlaid with a grid or square boxes in columns and rows.
Each row and column have a number.
By giving a row and column number any particular box or part of the grid can be identified.
It should be noted that in some countries the column number is given first followed by the row number, in other countries, this is reversed.
Be sure you are aware of which convention is being used.
a 4 figure grid refrence of old harry rock
What is durdle door in 6 grid refrence?
to be able to draw 4 figure grid reference
expkain how four figure grid references are used to find places on map
To convert a 6-figure grid reference into a 4-figure grid reference, you need to round the first two figures of the eastings and the northings down to the nearest ten. For example, if the 6-figure reference is 123456, the eastings would be rounded to 123400 and the northings to 456000, resulting in a 4-figure grid reference of 1234 4560. This method provides a less precise location but is useful for broader navigation.
The disadvantages of four figure grid references are 1 grid reference is 10 2 is 10 3 is 30 and 4 goes to 400..
To use a toposheet you first need to find the place. Then see the Northings and the distance from the left northing. after that see the eastings and similarly the distance.The eastings are written first and then the northings.this is callled the six-figure grid refrence.
The difference is that the 4 figure grid map is used for roughly the place that is located in the map while a 6 figure grid is used to find the exact location on the map. So when there's a need to find the exact location use the 6 figure grid instead of the 4 figure grid map.(:
A 6-figure grid reference provides a more precise location than a 4-figure grid reference by pinpointing a specific area within a grid square. While a 4-figure reference identifies a general location within a 1 km by 1 km square, a 6-figure reference narrows it down to a 100 m by 100 m area. This increased accuracy is especially useful in navigation, mapping, and emergency situations where exact locations are critical.
To use a toposheet you first need to find the place. Then see the Northings and the distance from the left northing. after that see the eastings and similarly the distance.The eastings are written first and then the northings.this is callled the six-figure grid refrence.
Because it is much more accurate (long distances) Larger the figures the greater the accuracy- (very accurate)
say the grid reference was 038441 the four grid referecne would be 0344 which is taking of the 3rd and last number