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0 votes	1150 views	1 answer	The curvature of the earth's surface, is taken into account only if the extent of survey is more than updated 9 years ago by Civil Engineer
0 votes	991 views	2 answers	Probable accidental error in precise levelling as recommended by International Geodetic Association, should not exceed (where k is in kilometers.) updated 9 years ago by Civil Engineer
0 votes	750 views	1 answer	The area of any irregular figure of the plotted map is measured with updated 9 years ago by Civil Engineer
0 votes	1967 views	1 answer	The sag of 50 m tape weighing 4 kg under 5 kg tension is roughly updated 9 years ago by Civil Engineer
0 votes	862 views	1 answer	If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remains within 1°, stadia system of tacheometric observations are made on updated 9 years ago by Civil Engineer
0 votes	763 views	1 answer	While surveying a plot of land by plane tabling, the field observations updated 9 years ago by Civil Engineer
0 votes	1309 views	1 answer	Diaphragm of a surveying telescope is held inside updated 9 years ago by Civil Engineer
0 votes	2121 views	1 answer	The boundary of water of a still lake, represents updated 9 years ago by Civil Engineer
0 votes	1706 views	2 answers	The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only updated 9 years ago by Civil Engineer
0 votes	543 views	0 answers	In chain surveying, perpendiculars to the chain line, are set out by updated 9 years ago by Civil Engineer