Drafting Zone

General Tolerances Study Guide

Achievement of exact dimensional control is not possible due to fabrication processes being imperfect. To ensure that a design can be fabricated, it is necessary to permit variation on every dimension specification. The allowable amount of fabrication error (tolerance) specified on a drawing is normally calculated on the basis of functional requirements. The achievable level of manufacturing accuracy is determined by factors such as process capability. Product cost can be directly impacted by the specified allowable tolerances, and care should be taken to avoid specifying tolerances that are unnecessarily small.

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General Tolerances Study Quiz

This Study Quiz is designed to test your knowledge of the material covered in the General Tolerances Study Guide. This Quiz will begin as soon as you click the "Begin Quiz" link.

Number of Questions: 5

Passing Score: 850

Time Limit: 10 minutes

Begin Quiz

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