LESSON 39

• GRAPHICAL METHOD is essentially an application of the compass rule. It provides a simple graphical means of making traverse adjustments.
• RECTANGULAR COORDINATES the two horizontal distances measured to a point from a pair of mutually perpendicular axes
• COORDINATE METHOD may be employed when the preliminary coordinates of stations along the traverse have been determined. This method of adjustment is simply an application of compass rule, since the corrections applied are proportionate to the lengths being adjusted