The error due to eccentricity of inner and outer axes can be eliminate – McqOptions

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1.	The error due to eccentricity of inner and outer axes can be eliminated by
A.	eading both verniers and taking the mean of the two
B.	aking both face observations and taking the mean of the two
C.	ouble sighting
D.	aking mean of several readings distributed over different portions of the graduated circle
Answer» B. aking both face observations and taking the mean of the two

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