与 «BACKSIGHT»相关的英语书籍
在以下的参考文献中发现
backsight的用法。与
backsight相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
7.9.2 Foresight, backsight and intermediate sights The word sight denotes either
an observation on a staffer the resulting staff reading. The first sight taken after
setting up the instrument at a point is the backsight. It should be to a point whose
...
measuring procedures being followed: (1) a single foresight pointing on the sun
for each pointing on the backsight mark or (2) multiple foresight pointings on the
sun for each pointing on the backsight mark. For the single foresight procedure, ...
Russell Charles Brinker, Roy Minnick, 1995
3
Fundamentals of Surveying
6.3.l Rise and Fall Method Each reading is entered on a different line in the
applicable column, except at change points where a foresight and a backsight
occupy the same line. This is to connect the line of sight of one set up of the
instrument ...
The term backsight has two uses in surveying. When shooting elevations, a
backsight (BS) is a rod reading taken on a point of known or assumed elevation.
The elevation of the point would be known if the station was a true benchmark.
Backsight at station 1 = 2.457 – 0.827 = 1.63 m The R.L of station 2 is missing.
R.L of station 1 is 150 m and there is a fall of 0.827 m from station 1 to station 2.
Therefore, R.L of station 2 must be less than that of station 1. R.L. of station 2 =
150 ...
6
Introduction to Mine Surveying
The actual angle right (124° 51.9') measured at A, backsight B, foresight sun,
under the above assumption becomes an angle left. Subtracting it from 360°
gives the angle right, 235° 08' 062, measured at A, backsight sun, foresight B.
Therefore ...
William Wesley Staley, 1964
7
Field Archaeology: An Introduction
Thisis known asa backsight. Thevalueofthe line of collimation is then calculated
by adding the reading on the staff to the value of thebenchmark. If the benchmark
had a value of 50 m and the staff reading is 1.4 m, then the line of collimation ...
8
Surveyor Reference Manual
backsight, unless the PC can be used as a backsight. In either case, to orient the
transit at the new station, the deflection angle of the station that is to be used for
the backsight is set on the horizontal circle with the upper clamp before setting on
...
George M. Cole, PhD, PE, PLS, 2009
9
An Introduction to Agricultural Engineering: A ...
BACKSIGHT A backsight (BS) is a rod reading taken on a point of known
elevation, and is the vertical distance between the line of sight and the point of
known elevation on which the rod is held. The reading is used to establish a new
height of ...
Harry L. Field, Lawrence O. Roth, Roth, 1991
10
Introduction to Agricultural Engineering Technology: A ...
15.3.2. Backsight. A backsight (BS) is a rod reading taken on a point of known or
assumed elevation. It is the vertical distance between the line of sight through the
instrument and the point of known or assumed elevation on which the rod is set.
Harry Field, John Solie, 2007
包含词语«BACKSIGHT»的新条目
找出国内和国际出版社所讨论的内容，以及词语
backsight在以下新条目的上下文中是如何使用的。
Small Unit Warfare That's Fun to Read About
It's a slightly tongue-in-cheek gem in storytelling that explains how the central character, an English officer named Backsight Forethought, ... «OZY, 五月 15»
The HP 35s Calculator—A Field Surveyor's Companion: Part 7 …
Raw coordinates are computed by simply assuming the backsight azimuth of N35E between points 4 and 5 and simply running around the ... «Amerisurv, 四月 15»
The Order: 1886 review — The best looking PlayStation 4 game …
The “soft cover” system also works great for moving between objects, and backsight – the ability to slow down time and take down many ... «Financial Post, 二月 15»
Spectra Precision Launches Central Cloud Service, New Software …
Other features include a new GNSS interface to improve workflows, a new multi-point backsight setup routine, and many other enhancements. «GPS World magazine, 十月 14»
Spectra Precision Introduces Spectra Precision Central and New …
Other features include a new GNSS interface to improve workflows, a new multi-point backsight setup routine, and many other enhancements. «GISuser.com, 十月 14»
New Maptek I-Site modular laser scanner
An in-built survey-grade telescope allows for traditional backsight workflow. The new modular design allows customers to save on these ... «Spatial Source, 八月 14»
Maptek previews I-Site 8820 at AIMS conference
... for geotechnical and geological mapping, while an in-built survey grade telescope allows for traditional backsight workflow. The new modular ... «World Coal, 八月 14»
MicroSurvey FieldGenius 7 Increases Day to Day Survey Productivity
Better Backsight Calculations – A new multi-backsight routine can be used to combine multiple control points/directions and calculate a more ... «PR Web, 七月 14»
Australian Mining Prospect Awards Finalist: Innovative Mining Solution
Requiring no foresight or backsight pins and no GPS, the aligner doesn't require surveyors and geologists to supervise the setup process. «Australian Mining, 十月 13»
The Ultimate Gift
... technology that made the work possible. Jeremy Smith shows a volunteer how to do a backsight between two standpipes using the FC-100. «POB, 五月 13»
