The map has vertical currently (top come bottom) and also horizontal lines (left come right). This lines type small squares 1,000 meter on every side called grid squares.

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The currently that kind grid squares room numbered along the external edge that the map picture. No two grid squares have the same number.

The precision the a allude location is shown by the number of digits in the coordinates: the an ext digits, the an ext precise the location.

1996-a 1,000 meter net square. 192961-to the nearest 100 meters. 19269614-to the nearest 10 meters

Look at number 1. Your resolve is grid square 1181. How do you recognize this? start from the left and read ideal until you pertained to 11, the first half of her address. Then review up come 81, the other half. Your resolve is what in net square 1181.

NOTE: always begin your analysis from the southwest corner of her square.


Grid square 1181 gives your general neighborhood, yet there is a many ground inside that grid square. To make her address more accurate, just add another number come the very first half and also another number come the second half-so your address has 6 numbers instead of four.

To obtain those extra numbers, pretend the each grid square has actually ten lines within it running north and also south, and another 10 to run east and west. This renders 100 smaller squares. You can estimate wherein these imaginary lines are.

Suppose you space halfway in between grid line 11 and also grid line 12. Then the following number is 5 and also the first half of your deal with is 115. Currently suppose you are also 3/10 the the method between grid line 81 and also grid heat 82. Then the second fifty percent of your address is 813. (If you were precisely on heat 81, the second component would it is in 810). Your address is 115813 (B, figure 5 18).

The most accurate means to identify the collaborates of a allude on a map is to use a name: coordinates scale. You carry out not need to use imagine lines; friend can find the exact collaborates using a name: coordinates Scale and also Protractor. This device has two coordinating scales, 1:25,000 meters and 1:50,000 meters. Make certain you use the correct scale.


First, locate the grid square in which the allude (for example, point A, number 2) is located (the allude should already be plotted on the map).

The number of the vertical grid line on the left (west) side of the grid square is the an initial and second digits that the coordinates.

The number of the horizontal grid line on the bottom (south) side of the grid square is the fourth and also fifth digits of the coordinates.


To determine the 3rd and sixth digits that the coordinates, ar the coordinate scale on the bottom horizontal grid heat of the net square containing suggest A.

Check to check out that the zeros that the coordinate range are in the reduced left hand (southwest) edge of the map net square.

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Slide the range to the right, maintaining the bottom of the range on the bottom grid heat until suggest A is under the upright (right hand) range (Figures 3 and also 4).


On the bottom scale, the 100 meter mark nearest the vertical grid line gives the 3rd digit, 5. ~ above the vertical scale, the 100 meter note nearest point A provides the sixth digit, 3. Therefore, the six-digit grid name: coordinates is 115813