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1 definition found
 for Transit compass
From The Collaborative International Dictionary of English v.0.48 :

  Transit \Trans"it\, n. [L. transitus, from transire to go over:
     cf. F. transit. See Transient.]
     1. The act of passing; passage through or over.
        [1913 Webster]
  
              In France you are now . . . in the transit from one
              form of government to another.        --Burke.
        [1913 Webster]
  
     2. The act or process of causing to pass; conveyance; as, the
        transit of goods through a country.
        [1913 Webster]
  
     3. A line or route of passage or conveyance; as, the
        Nicaragua transit. --E. G. Squier.
        [1913 Webster]
  
     4. (Astron.)
        (a) The passage of a heavenly body over the meridian of a
            place, or through the field of a telescope.
        (b) The passage of a smaller body across the disk of a
            larger, as of Venus across the sun's disk, or of a
            satellite or its shadow across the disk of its
            primary.
            [1913 Webster]
  
     5. An instrument resembling a theodolite, used by surveyors
        and engineers; -- called also transit compass, and
        surveyor's transit.
        [1913 Webster]
  
     Note: The surveyor's transit differs from the theodolite in
           having the horizontal axis attached directly to the
           telescope which is not mounted in Y's and can be turned
           completely over about the axis.
           [1913 Webster]
  
     Lower transit (Astron.), the passage of a heavenly body
        across that part of the meridian which is below the polar
        axis.
  
     Surveyor's transit. See Transit, 5, above.
  
     Transit circle (Astron.), a transit instrument with a
        graduated circle attached, used for observing the time of
        transit and the declination at one observation. See
        Circle, n., 3.
  
     Transit compass. See Transit, 5, above.
  
     Transit duty, a duty paid on goods that pass through a
        country.
  
     Transit instrument. (Astron.)
        (a) A telescope mounted at right angles to a horizontal
            axis, on which it revolves with its line of
            collimation in the plane of the meridian, -- used in
            connection with a clock for observing the time of
            transit of a heavenly body over the meridian of a
            place.
        (b) (Surv.) A surveyor's transit. See Transit, 5, above.
            
  
     Transit trade (Com.), the business conected with the
        passage of goods through a country to their destination.
        
  
     Upper transit (Astron.), the passage of a heavenly body
        across that part of the meridian which is above the polar
        axis.
        [1913 Webster]

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