Machine-translated by Google. Questions are authored in English.
Top

Discussion

Datum dimensioning differs from chain dimensioning in measuring every feature from

  • A.the centre of the drawing sheet
  • B.the nearest visible outline in the view
  • C.one common reference face or line
  • D.the feature immediately preceding it

Answer: C

Correct answer: one common reference face or line

Datum dimensioning measures every feature from a single face or line, so each dimension is independent of the others and no error accumulates. Chain dimensioning measures each feature from the one before, which is convenient for a sequence of equal steps but lets tolerances build up along the chain.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.