The theory of Hadley's quadrant
Subtitle: or, The rules for the construction and use of that instrument demonstrated
By: by Mr. Ludlam
Publisher: printed by R. Hett, and sold by T. Cadell
Published: 1771
Place of publication: London
Language: eng
Number of pages: 30
Subjects: Quadrants (Astronomical instruments); Early works to 1800
Notes: Includes bibliographical references.