Number of links per metre length of a chain are ............

Geodetic surveying is different from plane surveying because of ............

The index glass in an optical square is ............

The rise and fall method ............

You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the met…

A freely floating needle slightly gets inclined to the horizontal anywhere except on the equator. It is called .........…

An angle measured clockwise from the proceeding survey line to the following survey line is called ............

Isogonic lines are the lines having the same ............

The maximum tolerance in 20 m chain is ............