A contour map of the area is essential before proceeding with the construction of ............

Survey plotting can be done with an accuracy of ............

Sensitiveness of bubble tube can be increased by ............

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

The plotting of small areas which can be commanded from a single station, is usually done on the plane table by the meth…

An angle measured clockwise from the proceeding survey line to the following survey line is called ............

Removal of parallax, may be achieved by focusing ............

In the surveying telescope, diaphragm is held ............

The amount of correction due to local attraction at a place ............