gml:MeasureType supports recording an amount encoded as a value of XML Schema double, together with a units of measure indicated by an attribute uom, short for "units Of measure". The value of the uom attribute identifies a reference system for the amount, usually a ratio or interval scale.
<complexType name="MeasureType"><annotation><documentation>gml:MeasureType supports recording an amount encoded as a value of XML Schema double, together with a units of measure indicated by an attribute uom, short for "units Of measure". The value of the uom attribute identifies a reference system for the amount, usually a ratio or interval scale.</documentation></annotation><simpleContent><extension base="double"><attribute name="uom" type="gml:UomIdentifier" use="required"/></extension></simpleContent></complexType>