About: http://webisa.webdatacommons.org/159296541

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 optical comparator is the easiest to use as the measurement can be directly made and no mathematics are necessary.
http://www.w3.org/ns/prov#wasQuotedFrom	roton.com