Concept: Balancing of errors: The process of
adjusting the latitudes and departures to make the algebraic sum of latitudes or departures to zero is called the balancing of errors.
The two types of balancing rules to eliminate errors in traverse surveying are as follows:
1) Bowditch rule (Compass rule)/Compass rule: It is most commonly adopted when
angular measurement and linear measurement both are nearly of
same precision. The correction is considered
directly proportional to the length of the side.By Bowditch rule Correction to a particular line is given by
CL=1× CD=1 Where
CL,CD is corrections in latitude and longitude for a line.
2) Transit rule: When
angular measurements are more precise than linear measurements, the transit method is adopted.