Surveying
The station pointer is generally used in

Photogrammetric surveying
Astronomical surveying
Triangulation surveying
Hydrographical surveying

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Surveying
The First Point of Aeries

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

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