For a transit theodolite the least reading on the main scale is 20'. If its vernier scale should read 20", then ............

During leveling if back sight is more than foresight ............

A tie line in a chain surveying ............

The line in which the plane passing through the given point and the north and south poles intersects the surface of the …

The horizontal angle between the true meridian and a survey line is called ............

A lemniscate curve between the tangents is transitional throughout, if the polar deflection angle of its apex is equal t…

When the magnetic declination is 5°20' east, the magnetic bearing of the sun at noon will be ............

The difference between the most probable value and its observed value is ............

In the surveying telescope, diaphragm is held ............