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Text is to appear 3 mm high on a drawing plotted at 1:50. Its height in the drawing must be

  • A.50 mm
  • B.150 mm
  • C.3 mm
  • D.0.06 mm

Answer: B

Correct answer: 150 mm

A plot at 1:50 reduces every drawn length fiftyfold, so text that is to finish 3 mm high must be drawn \[ 3 \times 50 = 150\ \mathrm{mm} \] high. The same factor applies to arrowheads, hatch spacing and line type patterns, which is why the plot scale has to be settled before the annotation is added.

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