Thursday, 20/Jul/2017, 21:26
 
Home Sign Up RSS
Welcome, Guest
 





ARE YOU A REGISTERED MEMBER?
PLEASE SIGN IN BELOW:
User Name:
Password:


CATEGORIES












COUNTER








Home » Articles » LESSON NOTES (Social Studies) » Upper Primary


GRID REFERENCE

GRID REFERENCE

HOW T O READ AND WRITE LOCATION WITH GRID REFERENCE
TOPIC CODE: GR401ARTC

Consider the Grid reference below

To write the grid reference we start with Easting then Northing:

Follow the vertical  line from the point which leads to Easting Then record its value and follow the Horizontal  line from the point which leads to Northing then record its value

The grid reference can be  a 4- digit system or in a 6 - digit system

For example
Point M above can be given using Grid reference 1332 by a 4-digit system or 130320 by a 6-Digit system

Point   D =   1535  (4-digit system) or 150350  (6-digit system)

When a place or feature is located in the middle of a grid square as in the case of point  G above, use the following steps:

we start with Eastings as normal, but note that if we follow the vertical line down to the Eastings, we get a place between 11 and 12. so start writing 11 then subdivide the square into ten equal parts to know the exact easting location of point G as the illustration below:

By observing the magnified square above, you will find that each square has small ten equal parts. So if the location is there between two numbers, your task is to find where is the location of your point on those small parts. From our example above we found that The Easting of point G is 11 and small part we obtained as shown in the figure above is 5 so we say Easting of point G is 115

The same applied to Northings where we get 345 (refer to the grid lines above.

Therefore the location of point G is 115345.

Try yourself for points F,  N and T
 


*********** END  ************
Feel free to ask or comment down here:
Thanks
*********Mr. Yahya M (Badshah)


Related: Map scale introduction.

 

Category: Upper Primary | Added by: Admin (10/Jun/2017) | Author: Yahya Mohamed E W
Views: 57 | Rating: 0.0/0
Total comments: 0
Name *:
Email *:
Code *: