The sea officers companion, being an appendix to Waddington's Navigation; (which makes it a complete system of that art) containing several methods of obtaining the latitude of a place ... By R. Waddington, ...
Waddington, Robert.
London : printed for the author,
1778.
An enlarged edition of Robert Waddington's anonymous 'Of the reflecting sextant, and its use at sea', published in [1775?].
ESTC