Reduced bearing is:

When a chain is used at a temperature more than the temperature it was calibrated, the error in measured length will be

Which of the following instruments can be used for the direct measurement of directions?

When 1 cm on a map represents 10m on the ground, the representative fraction of the scale in

In levelling, the correction for combined curvature and refraction (in meters) is equal to

The main principle of surveying is to work

Due to curvature of earth the object

Two contour lines, having the same elevation

A surface which is normal to the direction of gravity at all points, as indicated by a plumb line, is known as