Surveying
A telescope is said to be inverted if its

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
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 down

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Surveying
Theodolite is an instrument used for

tightening the capstan-headed nuts of level tube
measurement of vertical angles only
measurement of horizontal angles only
measurement of both horizontal and vertical angles

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