<xs:element name="PitchDiameter" type="MeasuredLinearValueType" minOccurs="0"><xs:annotation><xs:documentation>The optional PitchDiameter element is the measured pitch diameter of the thread.</xs:documentation></xs:annotation></xs:element>
<xs:element name="FunctionalSize" type="MeasuredLinearValueType" minOccurs="0"><xs:annotation><xs:documentation>The optional FunctionalSize element is the measured functional size of the thread.</xs:documentation></xs:annotation></xs:element>
The id attribute is the QIF id of the characteristic, used for referencing.
Source
<xs:complexType name="ThreadCharacteristicMeasurementType"><xs:annotation><xs:documentation>The ThreadCharacteristicMeasurementType defines the results of a measured thread characteristic evaluation.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="CharacteristicMeasurementBaseType"><xs:sequence><xs:element name="PitchDiameter" type="MeasuredLinearValueType" minOccurs="0"><xs:annotation><xs:documentation>The optional PitchDiameter element is the measured pitch diameter of the thread.</xs:documentation></xs:annotation></xs:element><xs:element name="FunctionalSize" type="MeasuredLinearValueType" minOccurs="0"><xs:annotation><xs:documentation>The optional FunctionalSize element is the measured functional size of the thread.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>