Document Type

Conference Paper

Publication Date


Publication Title

ASEE Annual Conference and Exposition, Conference Proceedings



Conference Name

ASEE Annual Conference and Exposition, Honolulu, Hawaii


Geometric dimensioning and tolerancing is a symbolic language used on engineering drawings and computer generated three-dimensional solid models for explicitly describing nominal geometry and its allowable variation. Application cases using the concept of Rule 2 in the Geometric Dimensioning and Tolerancing (GD&T) are presented. The rule affects all fourteen geometric characteristics. Depending on the nature and location where each feature control frame is specified, interpretation on the applicability of Rule 2 is quite inconsistent. This paper focuses on identifying the characteristics of a feature control frame to remove this inconsistency. A table is created to clarify the confusions for students or designers, who can use it to justify their applications in the GD&T design.


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Original Publication Citation

Cheng, L., & Verma, A. (2007). Clarifications of rule 2 in teaching geometric dimensioning and tolerancing. Paper presented at the ASEE Annual Conference and Exposition, Conference Proceedings, Honolulu, Hawaii.