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If accurate orientation of plane table is to be done in area prone to local attraction, it is done by____.
By magnetic needle
By back sighting
Both A and B
None of the above
By back sighting
Practice and solve "If accurate orientation of plane table is to be done in area prone to local attraction, it is done b..." for Civil - Surveying. The correct answer is Option B: By back sighting. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Option **(b) **