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Define local attraction

Short answer

Local attraction is the deflection of the magnetic compass needle from the magnetic meridian caused by nearby magnetic materials like iron, steel, electrical cables, or iron-ore deposits. It produces a constant error in all bearings observed at that station.

Define local attraction.

Local attraction is the disturbance of the magnetic needle from its normal position (the magnetic meridian) caused by magnetic materials near the station, such as iron or steel objects, electric cables, or iron-ore rocks. It makes the bearings observed at that station wrong by a constant amount.

✓ Answer checked by Claude Opus 5.5 (high effort)

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