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transit instrument

Astronomy. meridian circle.
Surveying. transit (def 6a).
Origin of transit instrument
First recorded in 1805-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for transit instrument
Historical Examples
  • A noon-mark may easily be made by the aid of the transit instrument.

    Letters on Astronomy Denison Olmsted
  • In 1721 he got a transit instrument, and in 1726 a mural quadrant by Graham.

    History of Astronomy George Forbes
  • Surveyors make use of this proposition when they wish, without using a transit instrument, to run one line parallel to another.

    The Teaching of Geometry David Eugene Smith
  • In the first plan which was tried, the reflector was used as a transit instrument.

    Photographs of Nebul and Clusters James Edward Keeler
  • The dome contains an equatorial telescope, and the flank towers a transit instrument and mural circle.

  • This transit instrument seems to have been set up in a small room at the west end of what is now known as the North Terrace.

    The Royal Observatory Greenwich

    E. Walter (Edwared Walter) Maunder
  • The transit instrument was mounted as the transit circle is, between two solid stone piers, and moved in precisely the same way.

    The Royal Observatory Greenwich

    E. Walter (Edwared Walter) Maunder
  • Hence the transit instrument and clock are the most important members of an astronomical observatory.

    Letters on Astronomy Denison Olmsted
  • The transit instrument is a telescope which is fixed permanently in the meridian, and moves only in that plane.

    Letters on Astronomy Denison Olmsted
  • The microscopic deviation of the axis of a transit instrument from the horizontal position.

    The Sailor's Word-Book William Henry Smyth
British Dictionary definitions for transit instrument

transit instrument

an astronomical instrument, mounted on an E-W axis, in which the reticle of a telescope is always in the plane of the meridian. It is used to time the transit of a star, etc, across the meridian
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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