If whole circle bearing of a line is 120°, its reduced bearing is

Reciprocal leveling eliminates

In precision theodolite traverse for roads and railways, the angular error of closure should not exceed

The vertical distance above or below the datum is called

The collimation method for obtaining the reduced levels of points does not provide a check on

Closed traverse is suitable in the survey of

Finding the location of the station occupied by the table, on the sheet by means of sighting to three well defined point…

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

Cross-staff is used for