Surveying
Which of the following is not the function of levelling head ?

None of these
to attach the theodolite to the tripod
to support the main part of the instrument
to provide a means for leveling the theodolite

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Surveying
The First Point of Aeries

Is the point in the celestial sphere where zero meridian crosses the celestial equator
All listed here
Is usually denoted by the Greek letter ?
Is located near the very conspicuous rectangle of stars in the constellations of Pegasus and Andromeda

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