<xs:complexType name="UnitlessMeasure">
  <xs:annotation>
    <xs:documentation>A unitless measure is a measure which has no unit of measure symbol, but could be a real physical measurement. Examples would be pH, wire gauge (AWG and BWG) and shoe size. This is different from a dimensionless measure which represents a ratio whose units of measure have cancelled each other. DImensionless measures can have units of measure (like ppm or %) or may not have a displayable unit of measure symbol (in which case the units symbol Euc is used in a data transfer).</xs:documentation>
  </xs:annotation>
  <xs:simpleContent>
    <xs:extension base="eml:AbstractMeasure"/>
  </xs:simpleContent>
</xs:complexType>