Contour lines cross ridge or valley lines at ............

The constant vertical distance between two adjacent contours, is called ............

Location of contour gradient for a highway is best set out from ............

The method of intersection in plane tabling is commonly used for ............

Pick up the most accurate statement from the following ............

A line joining the optical centre of the object glass and the centre of the eye piece is known as ............

In indirect method of contouring, the best method of interpolation if contours ............

Can the vertical axis coincide with any other axis in any position of telescope?

The staff intercept will be ............