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Flinders bar
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after the English navigator Matthew Flinders (1774-1814).
Noun
en nautical A vertical soft iron bar placed in a tube typically on the fore side of a compass binnacle, used to counteract the horizontal effect of vertical magnetism induced by the Earth's magnetic field in the steel of a ship, an effect which varies with latitude.
en eponyms