Surveying
The prismatic compass and surveyor’s compass

both give QB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give QB of a line and WCB of a line
both give WCB of a line

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Surveying
Spring tides are caused when

Sun and moon are in line with earth
Solar tidal force acts opposite to lunar tidal force
Solar tidal force and lunar tidal force both coincide
None of these

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Surveying
The error due to eccentricity of inner and outer axes can be eliminated by

double sighting
reading both verniers and taking the mean of the two
taking both face observations and taking the mean of the two
taking mean of several readings distributed over different portions of the graduated circle

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