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0 votes	1277 views	1 answer	The curvature of the earth's surface, is taken into account only if the extent of survey is more than updated 10 years ago by Civil Engineer
0 votes	1124 views	2 answers	Probable accidental error in precise levelling as recommended by International Geodetic Association, should not exceed (where k is in kilometers.) updated 10 years ago by Civil Engineer
0 votes	876 views	1 answer	The area of any irregular figure of the plotted map is measured with updated 10 years ago by Civil Engineer
0 votes	2103 views	1 answer	The sag of 50 m tape weighing 4 kg under 5 kg tension is roughly updated 10 years ago by Civil Engineer
0 votes	1006 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 10 years ago by Civil Engineer
0 votes	888 views	1 answer	While surveying a plot of land by plane tabling, the field observations updated 10 years ago by Civil Engineer
0 votes	1453 views	1 answer	Diaphragm of a surveying telescope is held inside updated 10 years ago by Civil Engineer
0 votes	2276 views	1 answer	The boundary of water of a still lake, represents updated 10 years ago by Civil Engineer
0 votes	1843 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 10 years ago by Civil Engineer
0 votes	603 views	0 answers	In chain surveying, perpendiculars to the chain line, are set out by updated 10 years ago by Civil Engineer