Tolerance

The difference between the permissible maximum and minimum value of a measurable property; in straightening, dimensional tolerance matters especially in straightener geometry and product curvature.
Dimensioning diagram showing the tolerance band around the zero line with minimum, nominal and maximum dimensions of a workpiece.
Fig. 1 Dimensioning diagram showing the tolerance band around the zero line with minimum, nominal and maximum dimensions of a workpiece.

The tolerance is the difference between the permissible maximum and minimum value of a measurable property such as dimension, hardness, surface quality etc.

A property of particular importance in connection with straightening is "dimension", e.g. in the geometry of a straightener and in the curvature of the product to be straightened.

Adapted from "We do it straight" — Wire Straightening, p. 191 (ISBN 3-00-005897-4).

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