Traverse Misclose Checker
Enter the legs of a closed traverse to get the closure (ΔE, ΔN, linear misclose), the relative precision and an advisory Bowditch comparison — with the full working shown. Add interior angles to check the angular misclose against (n − 2) × 180°. Pick a state to compare against the guideline read from the loaded advisory rule packs, cited by pack id and version.
Free advisory field tool — every result is computed in your browser from the inputs you provide and is advisory and unverified, not for survey deliverables. Where a published guideline applies, results only ever read “within guideline” or “exceeds guideline — review”. The full working is shown for every calculation so each step can be re-checked. Registered surveyor confirmation required before reliance.
Traverse legs
Enter each leg as a grid bearing (degrees / minutes / seconds) and a distance in metres, in traverse order around the closed figure.
Interior angles (optional)
Add the observed interior angles to also check the angular misclose against (n − 2) × 180°. Three or more angles are needed.
Closure
Enter at least two complete legs to compute the closure. Results, the guideline comparison and the full working appear here.
Guideline values on this page are read from the loaded advisory rule packs and cited as pack id@version — they are never typed into the tool. States without a loaded pack get a generic closure check with no guideline number. Severity and acceptance decisions stay with the registered surveyor.
Advisory output — confirm independently before reliance.
Safety & scope
SurveyMarkup does not certify survey accuracy, cadastral compliance, legal boundaries, or coordinate correctness. It helps prepare and review working information, but original data and final outputs must be checked by a qualified user before use.
Assistance only - professional review remains required.