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...R t u g i jaipur subject surveying ce civil engg iii sem unit levelling prateek sharma blown up detail definition of terms types reduced level calculation curvature correction cc distance visible horizon instrument errors in contours and contour lines methods contouring area volume measurements or leveling is a branch the object which to establish verify measure height specified points relative datum it widely used cartography geodetic construction differences artifacts general term applied any various processes by elevations elevation aredetermined basicterms vertical line that follows local direction gravity as indicatedby plumbline surface curved at every point perpendicular tothe plumb gravityacts lying thus normal all field defined freely suspended bob horizontal plane verticalline aline localvertical are referenced thisis arbitrarily assigned an ofzero...