The theory and practice of finding the longitude at sea or land
Subtitle: to which are added, various methods of determining the latitude of a place, and variation of the compass : with new tables
By: by Andrew Mackay ...
Publisher: Printed for J. Sewell [etc.]
Published: 1793
Place of publication: London
Language: eng
Subjects: Longitude; Tables; Early works to 1800; Latitude; Magnetic declination
Other titles: Treatise on the theory and practice of finding the longitude at sea or land.
Notes: Half title: A treatise on the theory and practice of finding the longitude at sea or land.

Includes bibliographic references.