Contour lines ............

The theodolites used for making tacheometric observations by optical wedge system, are ............

Handles are connected to the link by ............

A scale which has a common representative fraction, but read in different measures, is called a ............

Chain surveying is most suitable when ............

In direct method of contouring, the process of locating or identifying points lying on a contour is called ............

Deviation of the actual road gradient from the proposed contour gradient uphill side, involves ............

The principle of working from whole to part is used in surveying because ............

The Simpson's rule of areas assumes that the portions of the boundary between the ends of ordinates are ............