Copyright Goodheart-Willcox Co., Inc. Name _____________________________________________________________________ 37 9. Identify the term that describes a physical boundary used to establish a simulated datum from a specified datum feature. _ _____________________________________________________________________________ 10. The _______________ geometric counterpart refers to the theoretically perfect boundary used to establish a datum from a datum feature. 11. Identify the term that describes an actual feature of a part, such as a surface, that is used to establish a datum. _ _____________________________________________________________________________ 12. Identify the term that describes a point, axis, line, or plane, or a combination thereof, derived from a datum feature simulator. _ _____________________________________________________________________________ 13. A feature control _______________ is a rectangular symbol used to define the geometric tolerancing characteristics of a feature. 14. Identify the term that describes the condition of a surface or center plane equidistant from a datum plane or datum axis. _ _____________________________________________________________________________ 15. A _______________ tolerance defines a tolerance zone in which the center point, axis, or center plane of a feature of size can vary from true position. 16. Define true position. _ _____________________________________________________________________________ _ _____________________________________________________________________________ 17. How does the shape of the tolerance zone associated with a coordinate tolerance differ from the shape of the tolerance zone associated with a positional tolerance? How does this impact the allowable location for a feature? _ _____________________________________________________________________________ _ _____________________________________________________________________________ _ _____________________________________________________________________________ 18. Identify the condition in which a feature has the maximum amount of material within the stated limits of size. _ _____________________________________________________________________________ 19. Why should caution be used when using chain dimensioning with coordinate tolerancing? _ _____________________________________________________________________________ _ _____________________________________________________________________________ _ _____________________________________________________________________________ 20. A _______________ dimension is a dimension that is considered theoretically perfect in size, profile, orientation, or location. 21. A _______________ model is a 3D model that encloses a volume and contains information about object edges, vertices, surfaces, and mass. 22. A _______________ model is a 3D model that has zero thickness, lacks mass, and may not enclose a volume.