Definitions
from The Century Dictionary.
- Circles attached to the mounting of an equatorial, and so placed as to be readily seen from the floor, which show the declination and hour-angle to which the telescope is directed; also, circles on the tube of a transit instrument which show by the aid of an attached level, the altitude of the object to be observed.
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Examples
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Adjacent to these "finder" diagrams are the settings -- to the nearest minute of arc in declination, and of time in right ascension -- as read from the large finding-circles, divided in black and white.
Scientific American Supplement, No. 530, February 27, 1886 Various
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