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...Uet ce scet wah surveying i dumpy wye level levelling it is a method used to determine the of points objects with reference selected datum also set out engineering works uses difference in levels obtain contour map an area cross section roads canals etc depth cutting and filling establish or erect machinery construct building component at predetermined important terms bench mark surveyor s cut on stone rock any point indicate survey reduced respect permanent feature indicates whether above below instruments are instrument ii staff leveling simplest form different parts telescope b eye piece c focusing knob d tube e bubble f foot screws g head h diaphragm accessory time conducting reading taken held properly concerned by viewing through usually m may be folding type telescopic aluminium foldable every metre length has came market consists three pieces topmost one slides into middle portion bottom when fully pulled will read exactly decimeters from shoe graduation made continuously other...