Surveying - Engineering

Q1:

Accurate measurement of deflection angles with a transit not properly adjusted may be made by

A setting the vernier A at zero at back station and then plunging the telescope

B setting the vernier A at zero at back station and turning the instrument to the forward station

C taking two back sights one with the telescope normal and the other with telescope inverted

D none of these.

ANS:C - taking two back sights one with the telescope normal and the other with telescope inverted

Telescope normal or direct:
When the face of the vertical circle is left and the bubble of the telescope is up.

Telescope inverted or reversed:
When the face of the vertical circle is right and the bubble of the telescope is down.