Pick up the correct statement from the following :-A-an observation or the resulting reading with the level on a levelling staff is called sightB-a back sight is the first sight taken after setting up the instrument in any positionC-the first sight on each change point is a fore sightD-the second sight on each change point is a back sightE-all the above.-E-all the above.

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APTITUDE CRACK · Accepted Answer

E all the above. E is correct. 1. The reading in the leveling staff(BS, IS &amp; FS) are all in the line of sight. 2. BS is always the first reading. Then comes IS or FS. 3. If the instrument is at the turning point then the first reading i.e BS is always considered the previous FS. 4. As it has been said in point 3 the first reading in the turning point is always BS.

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