Ranging is an operation of ............

The distance between terminal points computed from known, as ............

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

The telescope of a dumpy level ............

The best method of interpolation of contours, is by ............

The method of reversal ............

The most reliable method of plotting a theodolite traverse is ............

If D is the angle of deflection of a simple curve of radius R, the length of its long chord, is ............

Anallatic lens is a ............