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Surveying
The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is 1.345 m, the reduced level of the point, is
502.685 m
501.345 m
501.340 m
504.030 m
502.585 m.
Correct Answer:
501.340 m
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