Surveying
For which of the following permanent adjustments of theodolite, the spire test is used ?

adjustment of plate levels
adjustment of line of sight
adjustment of altitude bubble and vertical index frame
adjustment of horizontal axis

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Surveying
The First Point of Aeries

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
Is the point in the celestial sphere where zero meridian crosses the celestial equator

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