This method is developed for balancing a traverse in which angles are measured with a higher degree of precision than the lengths of the sides. It is based on the assumption that the error in departure (or latitude) of a traverse side is proportional to its departure (or latitude). Thus, according to the transit rule, the corrections to the departure (or latitude) of a traverse side can be calculated by using
------------- (Equation 29.10)
------------- (Equation 29.11)
where
d dij = Correction in departure of a traverse side ij
d lij = Correction in latitude of a traverse side ij
dD = total error in departure (or Algebric sum of the departures of all sides of the traverse)
dL = total error in latitude (or Algebric sum of the latitudes of all sides of the traverse)
dij = departure of the traverse side ij
lij = latitude of the traverse side ij
D = Arithmetic sum of the departures of all the sides of the traverse
L = Arithmetic sum of the latitudes of all the sides of the traverse
The corrections in transit rule do not take into consideration of the algebraic nature of the departure (or latitude) of traverse sides. This made the transit rule valid when the traverse lines are parallel with the grid system used for the traverse computations. So, further discussion regarding transit rule is being restricted in this course work.