Chapter 9 Profile Tolerances 339 15. Given the following drawing, describe the profi le geometric tolerance and related drawing specifi cations. Indicate whether the drawing shows preferred ASME Y14.5 use or an alternate practice. ___________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 16. Give the general note that can be used to specify basic dimensions that are used to dimension true profi le rather than using the customary rectangular block around the dimension to indicate basic. ____________________________________ _______________________________________________________________________ _______________________________________________________________________ 17. Explain why you would want to avoid using the general note described in Question 16. ____________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 18. Defi ne coplanar surfaces. _________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 19. Explain how to represent as a single surface the surface profi le of four (4) coplanar surfaces. _______________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 20. Profi le tolerancing can be used to control the form and orientation of a plane surface. True or False? 21. Profi le of a surface tolerancing can be used to control the angle of an inclined surface in relationship to a datum. True or False?