Surveying
The following sights are taken on a “turning point”

foresight only
foresight and intermediate sight
foresight only
foresight and backsight

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Surveying
Theodolite is an instrument used for

measurement of horizontal angles only
measurement of vertical angles only
measurement of both horizontal and vertical angles
tightening the capstan-headed nuts of level tube

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Surveying
Transit rule of adjusting the consecutive coordinates of a traverse is used where

All of these
angular measurements are more accurate than linear measurements
linear measurements are more accurate than angular measurements
linear and angular measurements of the traverse are of equal accuracy

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