About: http://webisa.webdatacommons.org/53766813

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	However, because of wear of the sliding elements or other effects, the distance d between thegraduation 1 and the scanning unit 2 changes in actual use.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com