quick_measure.inx

<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
    <name>Quick Measure</name>
    <id>pricklygorse.quickmeasure</id>
      <param name="unit" type="optiongroup" appearance="combo" gui-text="Length Unit:">
                <option translatable="no" value="in">in</option>
                <option translatable="no" value="ft">ft</option>
                <option translatable="no" value="yd">yd</option>
                <option translatable="no" value="mm">mm</option>
                <option translatable="no" value="cm">cm</option>
                <option translatable="no" value="m">m</option>
            </param>
    <effect>
        <object-type>path</object-type>
        <effects-menu>
            <submenu name="Prickly Gorse"/>
        </effects-menu>
    </effect>
    <script>
        <command location="inx" interpreter="python">quick_measure.py</command>
    </script>
</inkscape-extension>