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 What is scale ?


 A scale is the ratio between distance of any two points on the map and the actual distance of the same points on the ground.
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Name three methods of representing scale.

 1. Statement of scale,
2. Representative Fraction (R.F.),
3. Linear scale.
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In which unit is R. F. shown ?

 R. F. is just a ratio of map distances and ground distances and has no unit of its own.
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What is the importance of scale ?

Scale enables us to prepare accurate maps and it helps in measuring distances.
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 Draw a plain scale to show yards for a map whose scale is 4 inches : 1 mile.


Scale 4 inches : 1 mile


Scale 4 inches : 1 mile
But 2640 yards is not a round number. Select

But 2640 yards is not a round number. Select a round number of 3000 yards.

1760 yards are represented by = 4 inches

3000 yards are represented by


Scale 4 inches : 1 mile
But 2640 yards is not a round number. Select


Scale 4 inches : 1 mile
But 2640 yards is not a round number. Select

Fig. 2.7.

Construction : Draw a line 6.8 inches long. Divide it into 6 equal parts each showing 500 yards. Sub-divide the left hand part into 5 equal divisions. Each will show 100 yards.

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