Surveying
The First Point of Aeries

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

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Surveying
Dumpy level is most suitable when

fly levelling is being done over long distance
many readings are to be taken from a single setting of the instrument
All of these
the instrument is to be shifted frequently

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