Draw a diagonal scale of R.F.=1/25 to read centimetres up to 4 meters and on it show length 2.38 metre. Length of scale, no of main scale division, no of sub division, no of sub-sub division may be
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Here is a diagonal scale of R.F.=1/25 to read centimeters up to 4 meters, with a length of 12.5 cm (corresponding to 25 meters in actual length). The scale has 50 main scale divisions, each of which is further divided into 4 sub-divisions, and each sub-division is further divided into 4 sub-sub-divisions.
To show a length of 2.38 meters on this scale, we can simply mark the point on the scale that corresponds to 238 cm, which is exactly 19 main scale divisions and 3 sub-divisions (or 19.75 sub-divisions) from the left end of the scale.
Here is a rough sketch of the scale:
Explanation:
|----------------------------|
0 4m
|----------------------------|
0 | . | . | . | . | 1
|---|----|----|----|----|---|
2 | . | . | . | . | 3
|---|----|----|----|----|---|
4 | . | . | . | . | 5
|---|----|----|----|----|---|
. . . . . .
. . . . . .
. . . . . .
46 | . | . | . | . | 47
|---|----|----|----|----|---|
48 | . | . | . | . | 49
|----------------------------|
2.38m
In this sketch, the vertical lines represent the main scale divisions, and the dots represent the sub-divisions and sub-sub-divisions. The numbers above the main scale divisions indicate the corresponding length in meters. The length of the scale is not drawn to scale in this sketch.