A description of a new instrument or celestial compass : adapted for ascertaining the latitude and longitude at sea, by means of the declination and right ascension of the heavenly bodies : for finding the deviation of the magnetic needle, ... as also, for taking bearings and surveying without magnetic aid
A London navigation treatise of 1825 by George Graydon, printed by S. and R. Bentley, describing a celestial compass for finding latitude, longitude and magnetic deviation at sea. The pictures are engraved plates of an instrument drawn in fine line, a woodcut-style armillary sphere held by a kneeling atlas figure on a yellow ground, and a small sketch of a wave outline; a designer might take the precise linework of the instrument drawing and the bold figure-and-globe composition.
