compass deflection

noun

Definitions

The difference, expressed in degrees, between the direction a magnetic compass needle…
The difference, expressed in degrees, between the direction a magnetic compass needle points and true or astronomical north; magnetic declination.
Differences, expressed in degrees, between magnetic north directions and the direction a…
Differences, expressed in degrees, between magnetic north directions and the direction a magnetic compass points, owing to local magnetic interferences; magnetic deviation.

No curated loop yet for compass deflection. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA