In chain surveying, perpendiculars to the chain line, are set out by

Which of the following is the accurate method for plotting traverse area?

The correct position of holding staff is

The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting…

When internal angles are to be subtended by a theodolite survey for closed traverse

Planimeter is used for measuring

A level surface to which elevation of different points are referred to, is known as:

Accidental or compensating errors of length L are proportional to

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