About: http://webisa.webdatacommons.org/367918970

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	here is the cool thing: If you zoom the head -- even on this old-design flash -- it will move the dial and adjust the result.Here is an example of more modern guide number calculators.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com