Copyright Goodheart-Willcox Co., Inc. 18 Chapter Summary → Development of an accurate distance measurement standard was an important part of making possible the accurate production of parts. → Compliance with dimensioning and tolerancing standards makes possible a common understanding of product defi nition requirements. → A team consisting of people from various disciplines can produce a better design than an individual working alone. → Many professions and trades are affected by dimensions and tolerances. The more knowledgeable people are about dimensioning and tolerancing, the more accurately and effectively they can complete their daily jobs. → Required dimensioning and tolerancing skills include application, interpretation, and calculation. It is also an advantage if you are able to explain the meaning of the tolerance specifi cations. → CAD is the prevalent method of designing, dimensioning, and tolerancing industrial parts and assemblies. Review Questions Answer the following questions using the information provided in this chapter. Additional review questions and problems are available in the Study Guide. Multiple Choice 1. The current distance standard for the meter is based on the _____. A. meridional distance from the North Pole to the equator B. distance traveled by light in a given time C. meridional distance between the earth’s poles D. distance around the equator 2. The _____ measurement unit may be used when working to the current dimensioning and tolerancing standard. A. inch B. millimeter C. inch or millimeter D. None of the above. 3. A(n) _____ must be able to understand dimensions and tolerances because that person is responsible for verifying that the produced parts meet the product requirements. A. inspector B. engineer C. design manager D. None of the above. 4. An annotated model may contain _____ . A. model geometry B. supplemental geometry C. annotation D. All of the above. 5. Producibility of a design can be improved the most by _____ working to optimize the design. A. a single designer B. a team C. two designers D. None of the above. 6. Tolerance values should be _____. A. assigned on the basis of what feels right B. made very small to ensure proper function C. calculated to ensure proper function D. All of the above. 7. The term nominal refers to a numerical value used for the _____. A. high limit for a dimension B. low limit for a dimension C. value that lies within the upper and lower dimension limits D. name by which a dimension is known True/False 8. True or False? Measurements can be made more accurately when using the US Customary system than when using the SI system. 9. True or False? If a symbol does not exist for a special tolerancing need, it is a good idea to create one and use it on the annotated model or drawing. 10. True or False? ASME Y14.5 is the only ASME standard that provides dimensioning and tolerancing requirements.