For indirect ranging, number of ranging rods required, is

A chain may get elongated due to

The object of surveying is to be prepare

Which one of the following is known as instrumental error in plane table surveying?

Closed traverse is suitable in the survey of

If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is d…

A plain scale is used to read

The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as

The following sights are taken on a "turning point"