@TheSwavu

I just corrected it to use the specified coordinate system (NAD 83 EPSG:3424, which is actually metric) and did the trigonemetry from there in a spreadsheet. How does it look now?

@TheSwavu

Glad to hear my import worked. One must wonder how they measure heading/course in their surveys, since the heading of a straight line isn’t constant unless you’re going north or south.

Well they tried the best they could to extract the original border, but their inaccurate result becomes the legally binding, accurate boundary.

Also, I linked to that article in the main post -> “Our friends at Esri have written about this”

Thanks, Omnific.

If I want to be REALLY detailed, I must consider the fact that the width of a degree latitude is sinusoidally different from the southernmost portion to the northernmost portion. The only projection correction I did was for the starting point. For a path that deviates only a few hundred feet north of the starting point, the difference is really small anyway.