ISO 10303-214:2010(E)
A Geometric_tolerance is the allowable deviation of shape characteristics as defined in ISO 1101 [9].
Each Geometric_tolerance is a Cylindricity_tolerance, a Line_profile_tolerance, a Symmetry_tolerance, a Straightness_tolerance, a Flatness_tolerance, a Position_tolerance, a Circular_runout_tolerance, a Surface_profile_tolerance, a Total_runout_tolerance, a Perpendicularity_tolerance, a Parallelism_tolerance, a Concentricity_tolerance, an Angularity_tolerance, a Coaxiality_tolerance, or a Roundness_tolerance.
The data associated with a Geometric_tolerance are the following:
The is_applied_to specifies the shape that the Geometric_tolerance is associated to.
See geometric_tolerance to annotation_curve, geometric_tolerance to constructive_geometric_element, geometric_tolerance to derived_geometry, and geometric_tolerance to shape_element for the application assertions.
There shall be exactly one object that the Geometric_tolerance is_applied_to.
The modification specifies the Tolerance_condition that is associated with the application or the Geometric_tolerance.
See geometric_tolerance to tolerance_condition for the application assertion.
The modification need not be specified for a particular Geometric_tolerance.
The name specifies the word or group of words by which the Geometric_tolerance is referred to.
See geometric_tolerance to multi_language_string for the application assertion.
The name need not be specified for a particular Geometric_tolerance.
If present, there shall be exactly one object that defines the name for a Geometric_tolerance.
The qualifying_note specifies additional constraints on the Geometric_tolerance.
EXAMPLE 'not concave' is an example for the qualifying_note.
See geometric_tolerance to multi_language_string for the application assertion.
The qualifying_note need not be specified for a particular Geometric_tolerance.
If present, there shall be exactly one object that defines the qualifying_note for a Geometric_tolerance.
The segment_size specifies the length of a segment. All along any segment of this size, taken on the toleranced element, the toleranced element shall conform to the tolerance.
The segment_size need not be specified for a particular Geometric_tolerance.
The significant_digits specify the number of decimal digits indicating the accuracy of the tolerance value.
The significant_digits need not be specified for a particular Geometric_tolerance.
The tolerance_value specifies the tolerance magnitude expressed by a length measure with unit.
The value_determination specifies classification information on how the Geometric_tolerance shall be interpreted without giving details.
Where applicable the following values shall be used:
NOTE A Geometric_tolerance may be specified in the design stage of a product but it may also be documented as measured on a manufactured part.
The value_determination need not be specified for a particular Geometric_tolerance.
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