In the repetition method of measuring a horizontal angle with a theodolite, the main benefit is to:
Correct answer: B. Increase the angle-reading precision
- A. Determine the height of the instrument
- B. Increase the angle-reading precision
- C. Measure the staff intercept directly
- D. Eliminate the need for centring
Explanation
The repetition method measures an angle several times successively and reads the accumulated angle, reducing the relative effect of reading errors. It does not remove the need for accurate centring or determine instrument height.
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Surveying covers measurement of distances, angles and elevations, traversing, levelling, contouring, plane table work, theodolites, total stations and basic photogrammetry. It includes error adjustment, coordinate calculations, area and volume determination, and the distinction between accuracy and precision, as well as between temporary and permanent adjustments.
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