<http://schema.org/description>
"&lt;p&gt;Thickness is one of the most frequently measured dimensions and also one that is easy to understand.  So you might think that someone would come up with a one-style-fits-all measurement approach for just about every kind of thickness application. &lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/columns/3-2-1-contactmeasuring-thickness>