Hi Jason,
My name is in fact John. I appreciate both your courtesy and your efforts to help. That was only a feeble attempt on my part at being enigmatic. I'm still reacting to the death of J. D. Salinger, or something.
Here is a drawing file. I took a screen shot of it while I was setting the second guideline and embedded it into the drawing. The drawing is oriented in Compass mode. I rotated the grid 60 degrees. If you inquire the line segment I drew, its azimuth will read at 12 degrees, the same as it did when I drew it with the grid in normal rotation. After I rotated the grid, I pressed the guideline button and entered a rotation angle of 60 degrees. I selected rotated guideline and grid snap, and set the guideline at lower left. Then I set snap off and typed R. As you see in the screen shot, I entered X=1", tabbed to Y and entered 0, then Enter. The result was the other guideline. The two guidelines are obviously not 1" apart.
Again, it seems to me that the 2D Coordinate box reacts to the drawing orientation and ignores the grid altogether.
What am I doing wrong?
John