Magnetic declination at any place

The angle between the prolongation of the preceding line and the forward line of a traverse is called

An imaginary line tangential to the longitudinal curve of the bubble tube at its middle point is called

For a line AB

The fundamental principle of surveying is to work from the

In indirect method of contouring, the best method of interpolation of contours is

All level reading are taken to:

The walk step of a man is considered equal to:

If 'n' is the number of sides, then the total sum of interior angles of a closed traverse should be