Following observations were made to determine sensitivity of two bubble tubes A and B. Finc which is more sensitive. Distance of staff from instrument = 100m Bubble tube A B 1 11 11 Bubble reading (LHS) 13 08 15 06 Bubble reading (RHS) 05 12 03 14 Staff reading 1.681 1.767 1.635 1.788

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Instruments for Surveying

Surveying is the practice that determines the relative three-dimensional positions of many different points on the earth’s surface. There are various instruments used in Surveying like Theodolites, Total station, Tripod stands, Plane table, etc. for measuring horizontal angle, vertical and sloping angle, which are very useful for giving accurate and precise measurement.