Not sure what you mean Billy. In reference to the spine thickness of the razor, 15 degrees per side x 2 sides = 30 degrees total for the spine thickness. So, if the razor were laying down with spine and edge touching stone as if it were going to be sharpened on a bench stone. And you propped up the angle cube on the spine and the stone, it would measure 30 degrees wouldn’t it?
I see where I went wrong, I was too far out along the edge of the angle cube when I measured for the spine thickness. When I took another look at things and considered the distance from spine to razor edge, the spine thickness is about that of a pencil when cube reads 30 degrees.
I was inches too far out when I took my initial measurement.