IMAQ Find Edge discrepancy in Pixel and Real World coordinates

[elset191]

I'm trying to measure angles in an image.  I have calibrated the image to real-world (mm) coordinates.

The result returned by IMAQ Find Edge works when returning Points (Pixel) and Points (Real-World).*  However, I think there is a possible bug with Angle (Pixel) and Angle (Real-World).  They return the same value.  Before I realized the Line output tells you the angle I wrote code to find the angle myself using the Real-World points. 

So, is this a bug, or am I missing a step or two when calibrating?  I've attached a subset of the image, with lines, and the output to hopefully help clarify a bit.

The correct Real-World angle should be about 71degrees.

*I know this is working right because before I knew I could calibrate an image I wrote my own code to do as much, and got them both to reconcile.

[elset191]

I decided I'd attach an example of the actual code.  All defaults should be set properly.