About: http://webisa.webdatacommons.org/67981107

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 first and second metrology members 46 and 48 are fabricated from INVAR which, as noted above, is a material having a low coefficient of thermal expansion.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com