Surveying
The length of a chain is measured from

centre of one handle to centre of other handle
outside of one handle to inside of other handle
inside of one handle to inside of other handle
outside of one handle to outside of other handle

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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 levelThe correct answer is

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

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