Surveying
If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will

increase
decrease
not change
either ‘A’ or ‘B’

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Surveying
A ’level line’ is a

line parallel to the mean spheriodal surface of earth
line passing through the center of cross hairs and the center of eye piece
horizontal line
line passing through the objective lens and the eye-piece of a dumpy or tilting level

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