About: http://webisa.webdatacommons.org/207862180

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	Such a mechanism may comprise a rack and a pinion, a ratchet mechanism, a screw thread or other suitable mechanism for intermittently moving the plungers by predetermined increments.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com