 | Charles Davies - Surveying - 1830 - 390 pages
...line so determined, makes, with the true meridian, an angle equal to the azimuth of the pole star ; and, from this line, the variation of the needle is...observation, were west, and the north end of the needle lies on the west side of the line, the azimuth, plus the angle shown by the needle, is the true variation.... | |
 | Charles Davies - Navigation - 1852 - 412 pages
...direction with it and the compass-sight. The line so determined, makes, with the true meridian, an angle equal to the azimuth of the pole-star; and, from this...Now, if the elongation, at the time of observation, was west, and the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
 | Charles Davies - Navigation - 1854 - 446 pages
...direction with it and the compass-sight. The line so determined, makes, with the true meridian, an angle equal to the azimuth of the pole-star; and, from this...Now, if the .elongation, at the time of observation, was west, and" the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
 | J. H. Hawes - Public lands - 1868 - 248 pages
...direction with it and the compass-sight. The line so determined makes, with the true meridian, an angle equal to the azimuth of the polestar; and from this...Now, if the elongation, at the time of observation, was west, and the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
 | Charles Davies - Leveling - 1871 - 448 pages
...direction with it and the compass-sight. The line so determined, makes, with the true meridian, an angle equal to the azimuth of the pole-star ; and, from...Now, if the elongation, at the time of observation, was west, and the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
 | INSTRUCTIONS TO THE SURVEYORS GENERAL OF PUBLIC LANDS OF THE UNITED STATES. - 1871 - 106 pages
...The line so determined makes, with the true meridian, an angle equal to the azimuth of the pole star; and from this line the variation of the needle is...Now, if the elongation at the time of observation was west, and the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
 | J. H. Hawes - Public lands - 1873 - 234 pages
...direction with it and the compass- sight. The line so determined makes, with the true meridian, an angle equal to the azimuth of the polestar; and from this...Now, if the elongation, at the time of observation, was west, and the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
 | United States. General Land Office - Public lands - 1881 - 138 pages
...The line so determined makes, with the true meridian, an angle equal to the azimuth of the pole star; and from this line the variation of the needle is...Now, if the elongation at the time of observation was west, and the north end of the needle is on the west side of the line, the azimuth, plus the an;... | |
 | United States. Bureau of Land Management - Surveying - 1890 - 192 pages
...direction with it and the compass sight. The line so determined makes, with the true meridian, an angle equal to the azimuth of the pole-star; and from this...Now, if the elongation at the time of observation was west, and the north end of the needle is on the west side of the line, the azimuth, plus the angle... | |
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The line so determined makes, with the true meridian, an angle equal to the azimuth of the polestar; and from this line the variation of the needle is readily determined, even without tracing the true meridian on the ground. Place the compass upon this... 