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backsight |
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backsight [′bak‚sīt]
(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 In surveying, a sight on a previously established survey point or line. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Shortly after the Boer War, a British Major General named Sir Earnest Swinton, using the pseudonym Lieutenant Backsight Forethought, or BF, wrote The Defence of Duffer's Drift. These problems cover all regularly encountered navigation situations, as well as those that are only occasionally used and often forgotten, such as backsight, shooting and unknown body, finding Venus in daylight, and storm avoidance. It had a heavier barrel that was exposed at the muzzle, a different front sight block, two-piece striker mechanism, longer stock, more robust backsight, etc. |
backsight |
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