Chapter 21. Application of geometrical tolerances
In this chapter, examples are given of the application of tolerances to each of the characteristics on engineering drawings by providing a typical specification for the product and the appropriate note which must be added to the drawing. In every example, the tolerance values given are only typical figures: the product designer would normally be responsible for the selection of tolerance values for individual cases.
Straightness
A straight line is the shortest distance between two points. A straightness tolerance controls:
- the straightness of a line on a surface,
- the straightness of a line in a single plane,
- the straightness of an axis.
Case 1
Product requirement
The specified line shown ...
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