EN ISO 14405-2:2011

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principles and rules for indication of dimensions and
  related tolerances
5 Units used in drawings for dimensions
6 Indication of tolerances for linear and angular
  dimensions
7 Illustrations of ambiguous +/- tolerancing vs. unambiguous
  geometrical tolerancing
8 Angular tolerancing
Annex A (informative) - Explanations and examples of the
        ambiguity caused by using +/- tolerances for
        dimensions other than linear size
Annex B (informative) - Relation to the GPS matrix model
Bibliography

ISO 14405-2:2011 illustrates the use of geometrical tolerancing for dimensions that are not linear sizes to avoid the ambiguity that the use of ± tolerances on these dimensions causes. Both linear and angular dimensions, except size of features of size, are covered. Dimensional tolerancing can be indicated by ± tolerancing or geometrical tolerancing.The ambiguity caused by using ± tolerances for dimensions other than linear sizes is explained in an informative annex.