A levelling survey between stations A and B was carried out using a number of change points. The closing error of the le
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A levelling survey between stations A and B was carried out using a number of change points. The closing error of the le
A levelling survey between stations A and B was carried out using a number of change points. The closing error of the levelling survey was +2.5 mm. If the reduced level for station B was found equal to 1250.327 m, what is the true level for station B?
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