A practical method, to discover the longitude at sea, by a new contrived automaton. ... With an account of the author's new instrument for taking the latitude more accurately at sea, than hath hitherto been practised. ... By John Ward. ...
Ward, John,active 1698-1709.
London : printed for James Woodward,
1714.
With two final leaves of tables.
The second leaf bears a pasted errata leaf on the verso.
ESTC