1. Geometric Dimensioning and Tolerancing

2. MIL-HBK-727

5. Feature Control Frame

7. Datums

10. Rule 1-Indivdual Feature of Size Where only a tolerance of size is specified, the limits of size of an individual feature prescribe the extent to which variations in geometric form, as well as size, are allowed. (ASTM Y14.5-2009). Meaning?

11. 10±1 5±1 11 6

12. Engineering Design Communication – Lockhart and Johnson Fundamentals of Graphics Communication – Bertoline and Weibe

13. Engineering Design Communication – Lockhart and Johnson Fundamentals of Graphics Communication – Bertoline and Weibe

14. Engineering Design Communication – Lockhart and Johnson Fundamentals of Graphics Communication – Bertoline and Weibe

15. Engineering Design Communication – Lockhart and Johnson Fundamentals of Graphics Communication – Bertoline and Weibe

16. Engineering Design Communication – Lockhart and Johnson Fundamentals of Graphics Communication – Bertoline and Weibe

17. Engineering Design Communication – Lockhart and Johnson Fundamentals of Graphics Communication – Bertoline and Weibe

18. Engineering Design Communication – Lockhart and Johnson

19. Fundamentals of Graphics Communication – Bertoline and Weibe

22. Summary  All dimensions include controls of geometry. Rule 1 states that a size control inherently includes controls of form.  Because of Rule 1, the need for GDT callouts is minimized. Use carefully.  GDT should be used to refine the relationship between feature and form.  GDT should open tolerances. MMC should reduce part cost. Technical Graphics Communication, Bertoline, et al