Chronometer

GPTKB entity

Statements (24)
Predicate Object
gptkbp:instanceOf gptkb:Timekeeping_device
gptkbp:certification Official testing institute
gptkbp:commonIn Navigation
Wristwatches
Marine applications
gptkbp:distinctiveFeature Standard watch
gptkbp:etymology Greek: chronos (time) + metron (measure)
gptkbp:feature High precision
gptkbp:notableInvention gptkb:John_Harrison
gptkbp:originatedIn 18th century
gptkbp:regulates International standards
gptkbp:relatedTo gptkb:castle
gptkb:wristwatch
gptkbp:requires gptkb:certification
Testing under various conditions
gptkbp:standardizedBy gptkb:COSC
gptkbp:type gptkb:Quartz
Mechanical
gptkbp:usedBy Watchmakers
Navigators
gptkbp:usedFor Measuring time accurately
gptkbp:bfsParent gptkb:Harrison_Paul_Birtwistle
gptkbp:bfsLayer 7
https://www.w3.org/2000/01/rdf-schema#label Chronometer