 Caution as to the False Image. In using the compass upon the sun, if the revolving arm be turned a little one side of its proper position, a false or reflected image of the sun will appear on the silver plate in nearly the same place as that occupied...  Elements of Surveying and Leveling - Page 9by Charles Davies - 1883 - 564 pagesFull view - About this book
 | Gurley, W. & L. E., Troy, N.Y. - Surveying - 1871 - 228 pages
...and thus obtaining apparent time, which must be corrected by the equation of time as just described. CAUTION AS TO THE FALSE IMAGE. — In using the compass...proper position, a false or reflected image of the sua will appear on the silver plate in nearly the same place us that occupied by the true one. It is... | |
 | Charles Fitzroy Bellows, Francis Hodgman - Surveying - 1886 - 490 pages
...obtaining apparent time, which must be corrected by the equation of time as just dedescribed. 166. Caution as to the False Image. — In using the compass...reflection of the true image from the surface of the arm, and is a fruitful source of error to the inexperienced surveyor. It can, however, be readily distinguished... | |
 | Daniel Carhart - Surveying - 1888 - 530 pages
...thus obtaining apparent time, which must be corrected by the equation of time as just described. 346. Caution as to the False Image. In using the compass...reflection of the true image from the surface of the arm, and is a fruitful source of error to the inexperienced surveyor. It can, however, be readily distinguished... | |
 | Daniel Carhart - Surveying - 1888 - 536 pages
...thus obtaining apparent time, which must be corrected by the equation of time as just described. 346. Caution as to the False Image. In using the compass...same place as that occupied by the true one. It is cansed by the reflection of the true image from the surface of the arm, and is a fruitful source of... | |
 | Gurley, W. & L.E., Troy, N.Y. - Surveying - 1893 - 390 pages
...and thus obtaining apparent time, which must be corrected by the equation of time as just described. Caution as to the False Image. — In using the compass...a false or reflected image of the sun will appear un the silver plate in nearly the same place as that occupied by the true one. It is caused by the... | |
 | United States Army Service Schools. Ft. Leavenworth, Kansas - Military topography - 1895 - 318 pages
...revolving arm be turned a little to one side of its proper position a false or reflected image will appear in nearly the same place as that occupied by the true...reflection of the true image from the surface of the arm. It can be distinguished by being much less bright and less clearly defined. The Saegmuller Solar Attachment... | |
 | W. & L.E. Gurley - Surveying - 1905 - 462 pages
...vernier on the arm of the needle-box. In using the Compass, if the revolving arm be turned a little to one side of its proper position, a false or reflected image of the sun will appear on the FALSE IMAGE. .. . . . . , , silver plate in nearly the same place as that occupied by the true one.... | |
 | Gurley, W. & L. E., Troy, N.Y. - Surveying - 1895 - 490 pages
...vernier on the arm of the needle-box. In using the Compass, if the revolving arm be turned a little to one side of its proper position, a false or reflected image of the sun will appear on the FALSE IMAGE. silver plate in nearly the same place as that occupied by the true one. It is caused by... | |
 | Edwin Alvin Root - Military topography - 1902 - 458 pages
...turned a little to one side of its proper position, a false image may appear in nearly the same position as that occupied by the true one. It is caused by...reflection of the true image from the surface of the arm. It can be distinguished by being much less bright and less clearly defined. SMITH1S MERIDIAN ATTACHMENT.... | |
 | W. & L.E. Gurley - Surveying - 1908 - 484 pages
...on the arm of the needle box. In using the Solar Compass, if the revolving arm be turned a little to one side of its proper position, a false or reflected image of the sun will appear on the FALSE tMAGE .. . . . , , silver plate m nearly the same place as that occupied by the true one. It... | |
| |
