About: http://webisa.webdatacommons.org/211523371

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 collimators 28A may be fixed apertures that are custom made of suitable materials such as plastics or brass.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com