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Magnetic deviation is the compass error caused by local magnetic fields generated by nearby ferrous materials or electrical equipment, which distort the Earth's magnetic field in the vicinity of the compass. It is a local effect: the amount and direction of deviation depend on the specific location of the compass within a vessel, aircraft, or vehicle…
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deviation compass magnetic local error iron field used binnacle ship correction standard could caused earth's north navigation declination compasses two
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Magnetic deviation | is a | compass error caused by local magnetic fields generated by nearby ferrous materials or electrical equipment | 0.90 | text |
| magnetically permeable bodies | instance of | the angular difference between magnetic North and the compass needle due to nearby sources of interference | 0.80 | text |
| or other magnetic fields within the field of influence | instance of | the angular difference between magnetic North and the compass needle due to nearby sources of interference | 0.80 | text |
| William Westcott Rundell conducted systematic deviation measurements | instance of | engineers | 0.80 | text |
| produced graphical deviation curves | instance of | engineers | 0.80 | text |
| Magnetic deviation | related to Compass readings | Compasses | 0.60 | section |
| Magnetic deviation | related to Compass readings | North | 0.60 | section |
| Magnetic deviation | related to Compass readings | However | 0.60 | section |
| Magnetic deviation | related to Compass readings | The | 0.60 | section |
| Magnetic deviation | related to Compass readings | Earth's | 0.60 | section |
| Magnetic deviation | related to history | Sailing | 0.60 | section |
| Magnetic deviation | related to history | The | 0.60 | section |
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