Surveying
To avoid large centering error with very short legs, observations are generally made

To a target fixed on theodolite tripod on which theodolite may be fitted easily
All listed here
By using optical system for centering the theodolite
To chain pins

ANSWER DOWNLOAD EXAMIANS APP

Surveying
A telescope is said to be inverted if its

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

ANSWER DOWNLOAD EXAMIANS APP