ISO 10303-214:2010(E)
A Default_thickness is the thickness value that is valid for all sheet-like objects in the context defined by the Default_setting_association when a thickness value is not explicitly assigned.
The data associated with a Default_thickness are the following:
The description specifies additional information about the Default_thickness.
See default_thickness to multi_language_string for the application assertion.
The description need not be specified for a particular Default_thickness.
If present, there shall be exactly one object that defines the description for a Default_thickness.
The parameter_name specifies the character, abbreviation, word or group thereof that designates the Default_thickness. The default value is 't'.
The parameter_name need not be specified for a particular Default_thickness.
The thickness_value specifies the actual value and the corresponding unit for the Default_thickness. The thickness_value is measured normal to the surface.
See default_thickness to value_with_unit for the application assertion.
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