In the method of plane table survey the object to be plotted is sighted from two plane table stations. This method is called as

For a line AB

The technique of ploting all the accessible stations with a single set up of plane table is called

For the construction of highway

A line normal to the plumb line at all points is known as

An advantage of plane tabling is

Which of the following can fulfill the objective of the airport survey?

Which among the following doesn't indicate the basic calculation of total station?

Line of collimation