<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
    
    <xs:include schemaLocation="value.xsd"/>
    
    <xs:annotation>
        <xs:documentation xml:lang="en">
            Jeospace measure types and base elements
        </xs:documentation>
    </xs:annotation>
    
    <xs:simpleType name="SImultiplierType">
        <xs:restriction base="xs:NMTOKEN">
            <xs:enumeration value="Y"/>
            <xs:enumeration value="Z"/>
            <xs:enumeration value="E"/>
            <xs:enumeration value="P"/>
            <xs:enumeration value="T"/>
            <xs:enumeration value="G"/>
            <xs:enumeration value="M"/>
            <xs:enumeration value="k"/>
            <xs:enumeration value="h"/>
            <xs:enumeration value="da"/>
            <!--
            <xs:enumeration value=""/>
                -->
            <xs:enumeration value="d"/>
            <xs:enumeration value="c"/>
            <xs:enumeration value="m"/>
            <xs:enumeration value="u"/>
            <xs:enumeration value="n"/>
            <xs:enumeration value="p"/>
            <xs:enumeration value="f"/>
            <xs:enumeration value="a"/>
            <xs:enumeration value="z"/>
            <xs:enumeration value="y"/>
        </xs:restriction>
    </xs:simpleType>
    
    <xs:simpleType name="lengthUnitType">
        <xs:restriction base="xs:NMTOKEN">
            <xs:enumeration value="m"/>
            <xs:enumeration value="in"/>
            <xs:enumeration value="ft"/>
            <xs:enumeration value="yd"/>
            <xs:enumeration value="mi"/>
            <xs:enumeration value="nmi"/>
            <xs:enumeration value="ls"/>
            <xs:enumeration value="ly"/>
            <xs:enumeration value="au"/>
            <xs:enumeration value="pc"/>
        </xs:restriction>
    </xs:simpleType>
    
    <xs:complexType name="lengthType">
        <xs:attribute name="mag" type="xs:double" use="required"/>
        <xs:attribute name="mult" type="SImultiplierType"/>
        <xs:attribute name="unit" type="lengthUnitType" use="required"/>
    </xs:complexType>
    
    <xs:complexType name="nonNegativeLengthType">
        <xs:attribute name="mag" type="nonNegativeDoubleType" use="required"/>
        <xs:attribute name="mult" type="SImultiplierType"/>
        <xs:attribute name="unit" type="lengthUnitType" use="required"/>
    </xs:complexType>
    
    <xs:element name="Length" type="lengthType"/>
    
    <xs:simpleType name="massUnitType">
        <xs:restriction base="xs:NMTOKEN">
            <xs:enumeration value="g"/>
        </xs:restriction>
    </xs:simpleType>
    
    <xs:complexType name="massType">
        <xs:attribute name="mag" type="nonNegativeDoubleType" use="required"/>
        <xs:attribute name="mult" type="SImultiplierType"/>
        <xs:attribute name="unit" type="massUnitType" use="required"/>
    </xs:complexType>
    
    <xs:element name="Mass" type="massType"/>
    
</xs:schema>