About: http://webisa.webdatacommons.org/245050886

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	Variation was a number that had to be empirically tested and it was the amount of error contributed by the metal around the compass.
http://www.w3.org/ns/prov#wasQuotedFrom	scoutermom.com