About: http://webisa.webdatacommons.org/421134863

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	An optical comparator is an instrument that projects a magnified image or profile of a part onto a screen for comparison to a standard overlay profile or scale.
http://www.w3.org/ns/prov#wasQuotedFrom	globalspec.com