Ina precision traverse, included angles are measured by setting the vernier ............

The horizontal angle between true meridian and magnetic meridian at a place is called ............

Measurements taken with a wrong can be corrected by using the relation ............

The zero of the graduated circle of prismatic compass is located at ............

The trapezoidal rule of volumes V of an embankment divided into a number of sections equidistant D, is given by ........…

A series of closely spaced contour lines represents a ............

Plotting of inaccessible points on a plane table, is done by ............

The diaphragm of a stadia theodolite is fitted with two additional ............

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