Quadrants (Astronomical instruments)
URI(s)
Variants
Broader Terms
Closely Matching Concepts from Other Schemes
Earlier Established Forms
Sources
found: Mitlon, J. Cambridge dict. of astron.(quadrant: an instrument for measuring the altitudes of stars and the angular separation between celestial objects consisting of a graduated quarter-circle and a movable sighting arm. Prior to the invention of the telescope, such instruments were the only ones available to astronomers for positional measurements)
LC Classification
Instance Of
Scheme Membership(s)
Collection Membership(s)
Change Notes
2003-05-07: new
2003-06-17: revised
Alternate Formats
