A new and easy method of finding the latitude on sea or land
Subtitle: having two altitudes of the sun and the time elapsed between the two observations, measured by a watch or other time-keeper. By Samuel Dunn, ...
Series: Eighteenth century -- reel 1569, no. 16.
Publisher: printed, for the author
Published: 1778
Place of publication: London
Language: eng
Format: Microform
Number of pages: 20
Notes: Microfilm. Woodbridge, CT Research Publications, Inc., 1986. 1 reel ; 35mm. (The Eighteenth Century ; reel 1569, no. 16).