About: http://webisa.webdatacommons.org/275504429

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	Vacuum Tube Testers became important tools for those working with any vacuum tube based equipment, whether radios, televisions, computers or other electronic equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	computermuseum.li