Surveying
The altitude of a heavenly body is its angular distance, measured on the vertical circle passing through the body, above

Horizon
Pole
Equator
None of these

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Surveying
In the prismatic compass

the magnetic needle and graduated circle do not move with the box
the line of the sight does not move with the box
the magnetic needle moves 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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