(engineering) A sight on a previously established survey point or line. Reading a leveling rod in its unchanged position after moving the leveling instrument to a different location.
(navigation) A marine sextant observation of a celestial body made by facing 180° from the azimuth of the body and using the visible horizon in the direction in which the observer is facing.
backsight
| Sci-Tech Dictionary: backsight |
(′bak′sīt)
| 5min Related Video: backsight |
| US Military Dictionary: backsight |
n. the sight of a rifle or other weapon that is nearer the eye.
See the Introduction, Abbreviations and Pronunciation for further details.
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 | What is the datum point if the benchmark is 120feet the backsight to the benchmark is 7feet-3 1316 inches and the rod reading is 123.17feet? Read answer... |
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 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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| US Military Dictionary. The Oxford Essential Dictionary of the U.S. Military. Copyright © 2001, 2002 by Oxford University Press, Inc. All rights reserved. Read more |
