About: http://webisa.webdatacommons.org/145982880

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	Alternatively, the sensing mechanism may be mechanical, such as a combination of a gear and a switch, or it may be acoustical, with rotation of each shaft producing coded clicks of some sort; even electrostatic systems may be designed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com