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Lesson 11 - Coggle Diagram

- - - - Dimensions should not be duplicated, i.e. same dimension should not be repeated on different views, or the same information need not be given in two different ways
      - Avoid dimensioning to hidden lines and features
      - Dimension lines, extension lines and object outlines should not cross or overlap
- - - - Bilateral Tolerance: allowed to vary in two directions from the specified dimension. Both directions need not vary by the same amount.
      - Unilateral Tolerance: allowed to vary in only one direction
      - Limit Tolerance: the upper and lower limits of the dimension are specified