<http://schema.org/description>
"The QC20-W wireless ballbar from Renishaw enables this precision-machined medical device manufacturer to perform faster, more convenient CNC machine capability tests and produce a representative measurement of volumetric positioning accuracy."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/articles/wireless-ballbar-speeds-medical-machine-testing>