I'm in a colonial state and way back when I was young I heard the old tale of the surveyor finding a gap between property and somehow acquiring title....

3 sigma works for populations above 30. Surveyors generally don't observe that many samples, which is why the Chauvenet probability band is preferabl...

I've never seen a formula for it I could solve. Just used a "z table".

It's the relationship between error, S or sigma, and percentage of area under a normal (Gaussian) probability distribution curve.

Scanner can't see a circle beneath itself, the diameter of which increases with height. Lower the scanner and decrease the diameter of the unscanned c...

On our Port Authority Trans Hudson lines its 4' 8 1/2" on tangents and 4' 8 3/4" on curves to account for the wheel assemblies. But we have tight curv...

My favorite. My Astronomic T-2.

The original post; For the radius point coordinates from the original post; Xrp=(ya2+xa2-yc2-xc2-(ya-yc)*(ya2+xa2-yb2-xb2)/(ya-yb))/2/(xa-xc-(ya-yc)*...

How about; R = (abc)/SQRT((a+b+c)(b+c-a)(c+a-b)(a+b-c))

Yeah, that's it. When we run the routine it doesn't change the coordinates though.