Surveying
The rise and fall method

quicker and less tedious for large number of intermediate sights
is less accurate than height of instrument method
is not suitable for levelling with tilting levels
provides a check on the reduction of intermediate point levels

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Surveying
A telescope is said to be inverted if its

vertical circle is to its right and the bubble of the telescope is down
vertical circle is to its left and the bubble of the telescope is up
vertical circle is to its right and the bubble of the telescope is up
vertical circle is to its left and the bubble of the telescope is down

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