Surveying
The latitude of the observer's position, is

All listed here
Elevation of the elevated pole
Angular distance along the observer's meridian between equator and the observer
Declination of the observer's zenith

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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

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

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