The least count of a surveying instrument refers to the:
Correct answer: A. Smallest value that can be read or estimated
- A. Smallest value that can be read or estimated
- B. Largest distance it can measure
- C. Maximum permissible observational error
- D. Average value of repeated observations
Explanation
Least count is the smallest measurement increment that an instrument can directly read or reliably estimate. It is not the same as the maximum range or the observational error.
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About Surveying
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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