The operation of turning the table so that all the lines on the paper are parallel to the corresponding lines on the ground, is called

The curvature of the earth is taken into consideration if the limit of survey is:

Invar tapes are made of an alloy 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 statement is correct?

The included angles of a theodolite traverse, are generally measured

The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only

An instrument used for ranging is

The tacheometric method of contouring is particularly suitable