Surveying
The station where observations are not made, but the angles at the station are used in triangulation series, is known as

Pivot station
Satellite station
Subsidiary station
Main station

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Surveying
In the prismatic compass

the magnetic needle moves with the box
the magnetic needle and graduated circle do not move with the box
the line of the sight does not move with the box
the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction

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