Surveying - Engineering

Q1:

In tangential tacheometry, an ordinary level staff is used

A leaning towards the instrument for inclined sights upward

B leaning away from the instrument for inclined sights downwards

C vertical in all cases

D none of these.

ANS:C - vertical in all cases

In tangential tacheometry, an ordinary level staff is typically used in a vertical position in all cases, regardless of whether the sights are inclined upward or downward. So, the correct option is: vertical in all cases.