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Discussion

The length of scale to be constructed is obtained by multiplying the representative fraction by the

  • A.length of the drawing sheet available
  • B.smallest division required on the scale
  • C.number of main divisions to be marked
  • D.maximum length to be measured

Answer: D

Correct answer: maximum length to be measured

The scale must be long enough to read the greatest distance required, so its constructed length is that maximum multiplied by the representative fraction. A scale of 1/500 reading up to 60 m is therefore 12 cm long. The sheet size limits what is practicable but does not enter the calculation.

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