Question

state the length of the ranging rod used in reciprocal ranging

Answer 1

Ranging rods of greater length, i.e.,4 m to 6 m, are called ranging poles and are used in case of very long survey lines. Another type of ranging rod is known as an offset rod, which has no flag at the top. It is used for measuring small offsets from the survey line when the work is of an ordinary nature.

Answer 2

The greater lengths for ranging rods is also called the ranging poles.  

It is a instrument used in survey that is used for stations position marking.

The reciprocal ranging is also called as the indirect ranging and they are used when end stations are intervisible due to the high grounds.  

The ranging rod length is 20 cm.