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A part drawn at 1:1 occupying 2400 by 1200 mm is to be plotted on an A1 sheet of 841 by 594 mm. The largest suitable standard scale is

  • A.1:10
  • B.1:1
  • C.1:5
  • D.1:2

Answer: C

At 1:2 the part would need 1200 by 600 millimetres, which exceeds the sheet, while 1:5 gives 480 by 240 and fits with room for the title block and margins. Standard scales are preferred to an exact fit because they are read without arithmetic.

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