EVS-EN ISO 5458:2018

This document establishes complementary rules to ISO 1101 to be applied to pattern specifications and
defines rules to combine individual specifications, for geometrical specifications e.g. using the symbols
POSITION, SYMMETRY, LINE PROFILE and SURFACE PROFILE, as well as STRAIGHTNESS (in the case
where the toleranced features are nominally coaxial) and FLATNESS (in the case where the toleranced
features are nominally coplanar) as listed in Annex C.
These rules apply when a set of tolerance zones are grouped together with location or orientation
constraints, through the use of the CZ, CZR or SIM modifiers.
This document does not cover the use of the pattern specifications when the least and maximum
material requirement is applied (see ISO 2692).
This document does not cover the establishment of common datum (see ISO 5459) based on pattern
features.