Q
The error due to eccentricity of inner and outer axes can be eliminated by________________?
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A
A. Reading both verniers and taking the mean of the two
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B
B. Taking both face observations and taking the mean of the two
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C
C. Double sighting
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D
D. Taking mean of several readings distributed over different portions of the graduated circle
Correct Answer:
A. A. Reading both verniers and taking the mean of the two
