Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
marine chronometer
|
| gptkbp:firstProduced |
1770s
|
| https://www.w3.org/2000/01/rdf-schema#label |
John Arnold's chronometers
|
| gptkbp:influenced |
gptkb:Thomas_Earnshaw's_chronometers
|
| gptkbp:inventedBy |
gptkb:John_Arnold
|
| gptkbp:locationOfExhibition |
gptkb:Royal_Observatory,_Greenwich
|
| gptkbp:material |
gptkb:steel
brass |
| gptkbp:notableFeature |
bimetallic compensation balance
detached escapement helical balance spring |
| gptkbp:significance |
improved accuracy of sea navigation
|
| gptkbp:type |
spring-driven clock
|
| gptkbp:usedBy |
gptkb:Royal_Navy
|
| gptkbp:usedFor |
gptkb:navigation
longitude determination |
| gptkbp:bfsParent |
gptkb:The_Clockmakers'_Museum
|
| gptkbp:bfsLayer |
5
|