Chapter 3 Datums 119 6. Describe the method used for datum feature identifi cation. Indicate which letters cannot be used for datum identifi cation and explain why they cannot be used. __ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 7. List at least fi ve items that can be considered as datum features on an object or part. 1) ____________________________________________________________________ 2) ____________________________________________________________________ 3) ____________________________________________________________________ 4) ____________________________________________________________________ 5) ____________________________________________________________________ 8. Identify the datum feature, the part, the simulated datum plane, the physical datum feature simulator, and the datum plane on the following illustration. C) E) D) A) B) 9. There are two types of datum feature simulators. Name and describe each type. _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 10. Name at least four items that can be used as a datum feature simulator. 1) ____________________________________________________________________ 2) ____________________________________________________________________ 3) ____________________________________________________________________ 4) ____________________________________________________________________