1. How are concentric circles best dimensioned?

2. Sketch the symbols for diameter, radius, depth, counterbore, countersink, and square.

3. Where are these symbols placed with respect to their numerical values?

4. What is the primary difference between counterbore and spotface?

5. When is a small cross required at the center of a radius?

6. Define the depth of a blind hole.

7. When are angled extension lines used? Sketch an example.

8. When should extension lines be broken?

9. How is a reference dimension identified?

10. How can you tell if a dimension is out of scale (without measuring the drawing)?

11. Write a note showing that a .25-inch deep .875-inch diameter hole is to be repeated six times.

12. When is an arc dimensioned with a diameter, and when is one dimensioned with a radius?

13. When should the word "drill" replace the word "diameter" when dimensioning a hole?

14. What is the proper proportion of width to length of arrowheads?

15. What is the difference between limit dimensioning and plus and minus dimensioning?

16. What is the term for the theoretical size of a feature?

17. Compare the thickness of dimension lines to object lines.

18. Compare the thickness of dimension lines to extension lines.

19. If two dimensioning guidelines appear to conflict, which guideline should be followed?

20. Write a definition of what Rule 1 means for a drawing of a flat washer with a 0.500 diameter ID, 1.000 diameter OD, and a thickness of 0.062. Use a tolerance of plus or minus 0.005.