<xs:simpleType name="ReciprocalLengthUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="1/angstrom">
      <xs:annotation>
        <xs:documentation>per angstrom</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/cm">
      <xs:annotation>
        <xs:documentation>per centimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/ft">
      <xs:annotation>
        <xs:documentation>per foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/in">
      <xs:annotation>
        <xs:documentation>per inch</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/m">
      <xs:annotation>
        <xs:documentation>per metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/mi">
      <xs:annotation>
        <xs:documentation>per mile</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/mm">
      <xs:annotation>
        <xs:documentation>per millimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/nm">
      <xs:annotation>
        <xs:documentation>per nanometre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1/yd">
      <xs:annotation>
        <xs:documentation>per yard</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1E-9 1/ft">
      <xs:annotation>
        <xs:documentation>per thousand million foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>