Title: Apply datum (ordinate) dimensioning to a drawing.
Course: Drafting, Advanced (21102-IV) > Section: Performing Mechanical Drafting and Design Operations with Extensive Use of CADD

Application should include

- choosing datum location(s)
- placing datum symbol
- determining features to include in the dimensioning
- selecting appropriate units and level of precision.

Process/Skill Questions:

- What is the advantage of datum-dimensioning versus chain-dimensioning techniques?
- What is an example of a situation that would require more than datum?