A seaman's assistant
Subtitle: shewing how to correct the latitude computed from dead reckonings, and to ascertain the time of the day, and the variations of the compass, by a single altitude. By John Syeds, ...
Publisher: printed for the author, and sold by him
Published: 1794
Place of publication: London
Language: eng
Format: Microform
Number of pages: 6463
Notes: The tables are paginated in letters rather than numerals.

The watermark is dated 1794.

Microfilm. Woodbridge, CT Research Publications, Inc., 1985. 1 reel ; 35mm. (The Eighteenth Century ; reel 1394, no. 09).