pelorus definition

  • noun:
    • A fixed compass card on which bearings relative to a ship's heading are taken.
    • a tool accustomed simply take a bearing on a distant item.
    • An instrument just like a mariner's compass, but without magnetic needles, and achieving two picture vanes where bearings tend to be taken, esp. such as for instance can't be taken because of the compass.
    • Nautical, a musical instrument for detecting errors associated with compass by the bearings of celestial objects.

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