Patent ID: 6983549

Claim:
A method to determine the angular orientation between two surfaces using: A. a first frame that is aligned to one of said two surfaces, and B. a second frame that is aligned to the other of said two surfaces, and C. at least two measuring points are defined on said first frame at a known distance apart, and D. a line connecting said at least two measuring points on said first frame is aligned parallel with said first surface, and E. at least two measuring points are defined on said second frame at the same said known distance apart, and F. a line connecting said at least two measuring points on said second frame is aligned parallel with said second surface, and G. said at least two measuring points on said first frame and said at least two measuring points on said second frame are approximately in the same plane, and H. the positions of said at least two measuring points on said first frame are measured relative to the positions of said at least two measuring points on said second frame by physical contact and by use of a length measuring device, whereby said angular orientation between said two surfaces is determined in said plane.