The suitable contour interval for a map with scale 1 : 10000 is ............

A line normal to the plumb line at all points is known as ............

The theodolite method off setting out a curve involves ............

The fundamental principle of surveying is to work from the ............

The direct angles may have any value between ............

Usefullness of plane table is enhanced by providing ............

The angle of field of the telescope ............

Check lines (or proof lines) in Chain Surveying are essentially required ............

If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the…