Answer: reading both verniers and taking the mean of the two
Answer: reading both verniers and taking the mean of the two
Answer: error due to displacement of station signals
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Answer: leveling
Answer: adjustment of horizontal axis
Answer: much closer to the eye-piece than to the objective lens
Answer: vertical circle is to its right and the bubble of the telescope is down
Answer: on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate
Answer: none of the above
Answer: swinging
Answer: measurement of both horizontal and vertical angles
i) are inverted
ii) are upright
iii) run clockwise having 0° at south
iv) run clockwise having 0° at north
The correct answer isAnswer: (i) and (iii)
Answer: 13° E
Answer: western side of the true meridian
Answer: declination
Answer: give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
Answer: N66°30’W
Answer: presence of magnetic substances near the instrument
Answer: four times the true error
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