About: http://webisa.webdatacommons.org/61512727

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The apparatus set forth in claim 4 wherein said cavity is a hole drilled in said body substantially coaxial to said axis of rotation and said stylus holding means comprises an elongated tube.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com