Definition of Backsight. Meaning of Backsight. Synonyms of Backsight

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Definition of Backsight

Backsight
Backsight Back"sight`, n. [Back, adv. + sight. ] (Surv.) The reading of the leveling staff in its unchanged position when the leveling instrument has been taken to a new position; a sight directed backwards to a station previously occupied. Cf. Foresight, n., 3.

Meaning of Backsight from wikipedia

- either another known point or along an azimuth, which is to be held as a backsightsighting with the reticle inside the eyepiece — then holding that line...
- two foresights and two backsights and makes sure the difference between the foresights and the difference between the backsights are equal, thereby reducing...
- short 1904 book by the British Army officer Ernest Swinton. Lieutenant Backsight Forethought (BF) and his command of fifty men are given the task to defend...
- April 1916. p. 3994. Swinton, Ernest (under the pseudonym "Lieutenant Backsight Forethought"), The Defence of Duffer's Drift, Oxford: United Service Magazine...
- military tactics manual, framed as a series of six dreams by "Lieutenant Backsight Forethought" about the defence of a river crossing in the Boer War. BF...
- It was ****ed with a "globe and pinhead" foresight and a "buckhorn" backsight on the barrel. It also featured a well-made peep sight ****ed on the small...
- rod back and forth until it accurately lined up with another one as a backsight or foresight) and the Welsh verb 'dodi' meaning to lay or place. He thus...
- An Elton's quadrant is a derivative of the Davis quadrant. It adds an index arm and artificial horizon to the instrument, and was invented by English sea...
- pp. 281, 282, 519, 532, 613. ISBN 978-3-11-018464-8. "Design of the Backsight Point Configuration". Trimble knowledge Center. Trimble. Retrieved 10...
- for a backsight and cairn O as a foresight, and that cairns C and O were aligned in the direction of summer solstice sunset, using C as a backsight and...