Margetts's longitude tables; for correcting the effect of parallax and refraction, on the observ'd distance taken between the moon and the sun, or a fixed star, ...
Margetts, George,1748-1804.
London : printed for the author, no.42, Penton Street Islington. And sold by Mr. Elmsly, and Messrs. Gilbert & Wright, opticians,
[1790]
Dedication dated: May 17, 1790.
The title page and tables are engraved.
ESTC