According to Bowditch’s rule correction to latitude or departure
A. Total error in latitude or departure × length of that side/perimeter of traverse
B. Total error in latitude or departure × perimeter of traverse/length of that side
C. Total error in latitude/perimeter of traverse
D. None of these
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Right Answer is: A
SOLUTION
Adjustment of traversing:
1.Arbitrary Method: Measurement are adjusted by surveyor on his experience based.
2. Bowditch Method: It is done when both linear and angular measurement with highly accuracy. According to Bowditch rule, error in linear measurement are directly proportional to square root of length of line and error in angular measurement are inversely proportional to square root of length of line.
\(\begin{array}{l} {\rm{Correction}} = {\rm{\;total\;error\;in\;latitude\;or\;departure}} \times \;\frac{{length\;of\;that\;side\;}}{{perimeter\;of\;traverse}}\\ \end{array}\)
3. Graphical Method: It is based on bowditch rule. It generally used in compass traversing.
4. Transit Method: It is done when angular measurement is more accurate than linear measurement in traversing.In this method only linear measurement affected.
5. Axis Method: In this method, correction is applied only in length. It is done when angular measurement is more precise.