Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
scientific instrument
|
| gptkbp:alternativeName |
Ritchie liquid-filled compass
|
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| https://www.w3.org/2000/01/rdf-schema#label |
Ritchie compass
|
| gptkbp:introducedIn |
1860s
|
| gptkbp:inventedBy |
Edward Samuel Ritchie
|
| gptkbp:manufacturer |
E.S. Ritchie & Sons
|
| gptkbp:notableFeature |
liquid-filled design
|
| gptkbp:notableFor |
improved accuracy over dry card compasses
|
| gptkbp:patent |
1860s
|
| gptkbp:type |
marine compass
|
| gptkbp:usedFor |
gptkb:navigation
|
| gptkbp:usedOn |
ships
boats |
| gptkbp:bfsParent |
gptkb:William_Ritchie
|
| gptkbp:bfsLayer |
7
|