dip circle

Noun
  1. A measuring instrument for measuring the angle of magnetic dip (as from an airplane) (synset 103571735)
    referred to in: aeroplane, airplane, plane - an aircraft that has a fixed wing and is powered by propellers or jets
    is a type of: measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
    same as: inclinometer

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