Surveying
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a level The correct answer is

both (i) and (iv)
only (iii)
only (i)
both (ii) and (iii)

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Surveying
Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations?

Measuring angles to the point from at least two stations
Measuring distance from two points on traverse line
Measuring angle at one station and distance from other
Measuring angle and distance from one transit station

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