Surveying
The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be

closer to the higher station
closer to the lower station
equidistant from A and B
as far as possible from the line AB

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

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

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