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transit instrument

Astronomy. meridian circle.
Surveying. transit (def 6a).
Origin of transit instrument
1805-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for transit-instrument
Historical Examples
  • The transit-instrument, or culminatory, observes when a star has reached the highest point in its course.

    Titan: A Romance v. 1 (of 2) Jean Paul Friedrich Richter
  • The deviation of a transit-instrument from the plane of the meridian at the horizon; it is also termed the azimuthal error.

    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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