45°If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to
i. altitude bubble on index frame
ii. altitude bubble on index frame if it is to be used as a level
iii. altitude bubble on telescope
iv. altitude bubble on telescope if it is to be used as a level
The correct answer is
A)only (i)
B)both (i) and (iv)
C)only (iii)
D)both (ii) and (iii)

Question

Quizplus · Accepted Answer

The instrument is leveled with reference to the altitude bubble on the index frame for general leveling and with the altitude bubble on the telescope when it is specifically to be used as a level. This allows for precise measurements in both general and specific leveling tasks.

45°If Altitude Bubble Is Provided Both on Index Frame as Well