About: http://webisa.webdatacommons.org/423725727

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	A drafting machine is a tool used in technical drawing, consisting of a pair of scales mounted to form a right angle on an articulated protractor head that allows an angular rotation.[1][2]
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org