The description and use of Hadley's quadrant and sextant. / John Norie . In which are contained the best methods of adjusting these instruments, and of ascertaining the latitude of a ship at sea, by the meridional altitude of the sun, moon, a planet, or fixed stars. Also, an improved method of taking a lunar observation ; whereby one person may observe the altitudes and angular distances of the objects without assistants. To which are added, complete and correct tables of the sun's declination, calculated to the year 1804, tables of the right ascension of the sun and fixed stars, and all others necessary to be used in finding the latitude by a meridional altitude