<xs:simpleType name="TypeOfScaleEnumType"><xs:annotation><xs:documentation>The TypeOfScaleEnumType enumerates values that describe the type of a scale on a CMM.</xs:documentation></xs:annotation><xs:restriction base="xs:NMTOKEN"><xs:enumeration value="ELECTROOPTICAL_LINEAR"/><xs:enumeration value="ELECTROOPTICAL_ROTARY"/><xs:enumeration value="LASER_INTERFEROMETER_LINEAR"/><xs:enumeration value="TIME_OF_FLIGHT_LINEAR"/></xs:restriction></xs:simpleType>