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A draughtsman attempts to draw a solid with its axis inclined to both planes directly in one stage. The likely outcome is

  • A.an incorrect drawing, the base shape being unobtainable
  • B.a correct drawing obtained more quickly than in stages
  • C.a drawing correct in plan but wrong in elevation only
  • D.a drawing that cannot be dimensioned afterwards

Answer: A

Correct answer: an incorrect drawing, the base shape being unobtainable

The staged method exists because the true shape of the base can only be drawn when the base lies parallel to a plane of projection. Attempt the inclined position directly and there is no view in which the base appears at true size, so its outline has to be guessed. Working in stages projects the true shape forward into the inclined position.

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