The line of collimation should be parallel to:
AVertical axis
BBubble axis
CPlumb axis
DNoneofthese
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
The circle in which a plane tangent to the earth surface at the point observation intersect the celestial sphere is called
A series of closely spaced contour lines represent:
In prismatic compass, the magnetic needle used is:
The main principle of surveying is__________
Local attraction in compass surveying may exist due to ..............