transit instrument

1. 1.

   a telescope mounted on an axis running east and west and used to time the transit of a celestial body across the meridian

   Broadertelescope

Questions about transit instrument

What does transit instrument mean?

transit instrument means "a telescope mounted on an axis running east and west and used to time the transit of a celestial body across the meridian".

Is transit instrument a common word?

transit instrument is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.