Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:chronograph
|
| https://www.w3.org/2000/01/rdf-schema#label |
Harrison's chronometer
|
| gptkbp:influence |
gptkb:navigation_system
|
| gptkbp:invention |
gptkb:John_Harrison_XX
1735 |
| gptkbp:material |
brass
|
| gptkbp:mechanism_of_action |
mechanical escapement
|
| gptkbp:notable_models |
H4
|
| gptkbp:performance |
within one second per day
|
| gptkbp:purpose |
determining longitude at sea
|
| gptkbp:significance |
solved the problem of longitude
|
| gptkbp:bfsParent |
gptkb:Board_of_Longitude_prize
|
| gptkbp:bfsLayer |
5
|