| Angular Measurements |
The direction of traverse sides are measured by deflection angles, interior angles, azimuth etc (Module 6). Immediately after completion of a set of observation, an arithmetical check on the angular error of closure is required to be performed in the field itself to detect any blunder or excessively large error in angular measurement. For this, higher accuracy azimuth of one line or two lines, depending on the method adopted, are required to be known or determined before starting of the traverse surveying. The method of traversing depends on the type of parameter used to define the direction of sides; such as
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