SURVEYING and MAPPING
GENERAL
There are numerous meanings of looking over. One of them is as per the following: Looking over is the science or specialty of making the estimations important to decide the relative positions of focuses above, on, or underneath the surface of the earth, or to build up such focuses. The work of the surveyor comprises to a great extent in making such estimations and can be separated into three sections - Field Work, Figuring and Mapping.
A portion of the more critical characterizations of looking over include:
1) Plane Studying, 2) Geodetic Looking over, 3) Land Studying, 4) Topographic Reviewing, 5) Course Studying, 6) Hydrographic Looking over, 7) Development Studying, and 8) Photogrammetric Reviewing.
Looking over is one of the most seasoned expressions honed by man, and is vital in all branches of designing. All field operations and office calculations are represented by the steady battle to take out or if nothing else diminish mistakes. Each estimation contains a blunder. No estimation can ever be accurate as a result of common, instrumental, and individual mistakes, thusly, the definite response for a deliberate edge or separation is never known. It is, along these lines, important to mastermind calculations and field work with the goal that blunders are minimized and botches promptly revealed.
A critical element to be seen in looking over (and all designing) is the matter of huge figures furthermore, the adjusting off of numbers. The quantity of critical digits recorded and utilized as a part of calculations is vital in passing on a genuine picture to clients of the information. A separation measured with a 100-ft. steel tape graduated to tenths of a foot can be given as 236.47. It has 5 huge figures, the "7" being an evaluated or introduced number. A separation recorded as 376.2 does not mean 367.20 unless the esteem has been measured to hundredths, in which case the zero ought to have been recorded.
