transit instrument

American  

noun

1. Astronomy. meridian circle.

2. Surveying. transit.

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transit instrument British  

noun

1. 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

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Etymology

Origin of transit instrument

First recorded in 1805–15

Example Sentences

See Examples For:

transit instrument

The planetarium's dome will float over a reflecting pool, will house an "intermediate space transit instrument" which will project the heavens not only as they appear on earth but from the moon.

From Time Magazine Archive

In the first plan which was tried, the reflector was used as a transit instrument.

From Photographs of Nebul? and Clusters Made with the Crossley Reflector by Keeler, James Edward

The direction of the meridian is determined either by a theodolite or a portable transit instrument.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various

He has also a fine transit instrument, and the admiral, being his near neighbor, has the privilege of using the observatory as his own.

From Maria Mitchell: Life, Letters, and Journals by Mitchell, Maria

The transit instrument is always reversed at least once in the course of an evening’s observing, the level being frequently read and recorded.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various