<xs:element name="adj_normal" type="adj_normalType"/>

<xs:element name="angle" type="xs:decimal">
  <xs:annotation>
    <xs:documentation>Used to specify angle values for other elements.</xs:documentation>
  </xs:annotation>
</xs:element>

<xs:element name="axis_point" type="axis_pointType"/>

<xs:element name="axis_vector" type="axis_vectorType"/>

<xs:element name="ball_radius" type="xs:decimal">
  <xs:annotation>
    <xs:documentation>When measured point data is reported, including the radius allows an application to switch between tip comp'ed and tip center. </xs:documentation>
  </xs:annotation>
</xs:element>

<xs:element name="cad_identifier" type="xs:string">
  <xs:annotation>
    <xs:documentation>Used to store the indentifier of the geometry which the feature is based on.</xs:documentation>
  </xs:annotation>
</xs:element>

<xs:element name="center_point" type="center_pointType"/>

<xs:element name="depth" type="xs:decimal"/>

<xs:element name="diameter" type="xs:decimal">
  <xs:annotation>
    <xs:documentation>Used to specify the diameter for circular or cylindrical features</xs:documentation>
  </xs:annotation>
</xs:element>

<xs:element name="diameter_max" type="xs:decimal">
  <xs:annotation>
    <xs:documentation>Used when an analysis package applies a fitting algorythm that has a high and low value.  For example a least squares fit might record the +2 STD. Dev.</xs:documentation>
  </xs:annotation>
</xs:element>

<xs:element name=