A line joining the optical centre of the object glass to the centre of the eye pieceof a level is
AAxis of the bubble tube
BAxis of telescope
CLine of collimation
DLine of sight
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
Placenta having two complete and separate lobes each with umbilical vessels called :
GI pipe has a coating of
The preliminary inspection of the area to be surveyed is called:
Expand GPS
If the bearing of two lines AB and AC are N 40°10' E and N 89° 45'E respectively.Its Included angle is :