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backsight

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1
2 Use and Care of Level - Definitions
A backsight (B.S.) is a rod reading taken at a point of known elevation, such as a benchmark or turning point . Another term for backsight is plus sight. FORESIGHT. www.in.gov
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BACKSIGHT Definition & Meaning - Merriam-Webster
The meaning of BACKSIGHT is a reading of the leveling rod in its unchanged position when the leveling instrument has been taken to a new position. www.merriam-webster.com
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Backsight Definition for Land Surveyors - Learn CST
1. A point used to determine the elevation and/or angular orientation of the surveying instrument. 2. In leveling, the backsight is the visual intersection. learncst.com
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backsight
backsight (ˈbækˈsaɪt) [f. back adv.] a. In Surveying, a ‘sight’ or reading taken backwards, or towards the point of starting. b. The sight of a rifle nearer the stock.1847 E. Cresy Encycl. Civil Engineering I. 802 Compound Levelling is..performed by taking back and forward sights. 1847 [see sight n.... Oxford English Dictionary
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Backsight : r/Surveying - Reddit
You should always use a fixed backsight (legs). And you should be checking your backsight every 10-20 stakes to make sure everything is tight. www.reddit.com
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BACKSIGHT Definition & Meaning - Dictionary.com
noun. Surveying. a sight on a previously occupied instrument station. (in leveling) the reading on a rod that is held on a point of known elevation ... www.dictionary.com
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Drift Sight
Sighting was accomplished in the manner of iron sights on rifles, and the Drift Sight used the same terminology of "foresight" and "backsight", although The bombs were dropped when the wires of the foresight, backsight and target overlapped as seen from the bomb aimer's position. wikipedia.org
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BACKSIGHT definition in American English - Collins Dictionary
1. a sight on a previously occupied instrument station 2. (in leveling) the reading on a rod that is held on a point of known elevation. www.collinsdictionary.com
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[PDF] Survey Basics - Center for Dirt and Gravel Road Studies
Backsight (BS) - A rod reading taken on a point of known elevation. It is ... • Collect a backsight on the benchmark to establish HI. • Collect FS at ... dirtandgravel.psu.edu
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Backsights - (Intro to Civil Engineering) - Vocab, Definition ... - Fiveable
Backsights are the initial readings taken with a surveying instrument, typically a level or total station, to establish a reference point for measurement. library.fiveable.me
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backsight - Wiktionary, the free dictionary
(surveying) A measurement or reading taken back towards a point of known elevation, used to calculate the height of the surveying instrument (theodolite, ... en.wiktionary.org
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"Groundhog Day" Loop - TV Tropes
Though not the earliest example, this trope is named after the 1993 film Groundhog Day, which established the trope in Western popular culture. The Ur-Example of the trope is The Defence of Duffer's Drift from 1904, although in that case the loop traversals are dreams of Lieutenant Backsight Forethought which permit him (and the reader) to ...
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hindsight
hind-sight, ˈhindsight 1. a. (hind-sight) The backsight of a rifle.1851 Mayne Reid Scalp Hunt. xxi, When you squint through her hind-sights. 1889 Farmer Americanisms. b. to knock (or kick) the hindsight out or off: to dispose of or demolish completely. U.S. colloq.1834 W. A. Caruthers Kentuckian in ... Oxford English Dictionary
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Hardcore Breakout USA 1,2,3,...
2:17 "Frog Song" - P.E.D. 0:49 Volume 2 Part 1 "On A String" - Dogs On Ice 2:51 "People Suck" - No Use For A Name 2:08 "Hi Jinx" - Fizgig 1:13 "Backsight wikipedia.org
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Levelling
This gives the height of the instrument above the starting (backsight) point and allows the height of the instrument (H.I.) above the datum to be computed Some instruments provide three crosshairs which allow stadia measurement of the foresight and backsight distances. wikipedia.org
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