 | Gurley, W. & L. E., Troy, N.Y. - Surveying - 1871 - 218 pages
...latitude arc, or the leveling screws of the tripod. Then carefully turn the arm half way over, until it rests upon the Adjuster by the opposite faces of...which confine the plate to the block, and move the plato under their heads, until one half the error in the position of the sun's image is removed. Again... | |
 | Gurley, W. & L. E., Troy, N.Y. - Surveying - 1871 - 228 pages
...lati•ttiiiearc, or the leveling screws of the tripod. Then carefrilly turn the arm half way over, until it rests upon the adjuster by the opposite faces of...are in adjustment ; if not, loosen the three screws "wtiich confine the plato to the block, and move the plato «fifler their heads, until one half the... | |
 | Horatio Nelson Robinson - Navigation - 1878 - 564 pages
...latitude arc, or the leveling screws of the tripod. Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of...to the block, and move the plate under their heads, until one half the error in the position of the sun's image is removed. Again bring the image between... | |
 | Gurley, W. & L. E., Troy, N.Y. - Surveying - 1878 - 284 pages
...latitude arc, or the leveling screws of the tripod. Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of...image. If it remains between the lines as before, tho leus and plate are in adjustment ; if not, loosen the three screws whicL confine the plate to the... | |
 | Charles Davies - Surveying - 1883 - 578 pages
...latitude arc or the leveling-screws of the tripod. Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of...observe the position of the sun's image. If it remains bstween the lines as before, the lens and plate are in adjustment ; if not, loosen the three screws... | |
 | Charles Davies - Surveying - 1883 - 614 pages
...latitude arc or the loveling-screws of the tripod. Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of...rectangular blocks, and again observe the position of-the sun's image. If it remains between the lines as before, the lens and plate are in adjust ment... | |
 | Charles Fitzroy Bellows, Francis Hodgman - Surveying - 1886 - 490 pages
...arc or the leveling-screws of the tripod. Then carefully turn the arm half way over, until it tests upon the adjuster by the opposite faces of the rectangular...to the block, and move the plate under their heads, until one-half the error in the position of the sun's image is removed. Again bring the image between... | |
 | Daniel Carhart - Surveying - 1888 - 528 pages
...latitude arc or the levellingscrews of the tripod. Then carefully turn the arm half-way over, until it rests upon the adjuster by the opposite faces of...to the block, and move the plate under their heads, until one-half the error in the position of the sun's image is removed. Again bring the image between... | |
 | Francis Hodgman, Charles Fitzroy Bellows - Surveying - 1891 - 512 pages
...latitude arc or the leveling-screws of the tripod. Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of...loosen the three screws which confine the plate to the bloek, and move the plate under their heads, until one-half the error in the position of the sun's... | |
 | United States Army Service Schools. Ft. Leavenworth, Kansas - Military topography - 1895 - 318 pages
...position by the tangent screw. Then carefully turn the arm over until it rests upon the adjuster on the opposite faces of the rectangular blocks, and...to the block, and move the plate under their heads until one half the error in the position of the suns image is removed. Repeat for a test and correct... | |
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Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of the rectangular blocks, and again observe the position of the sun's image. If it remains between the lines as before, the... 
