"Here you can see the angles of the flywheel. If I ever reference an angle on the flywheel, you can use this image as a reference. The white square marks the base of a wooden pyramid." ... "If the number of degrees ends in a 0 it is a north pole, i.e. 0°, 30°, 60°, etc. If the number of degrees ends in a 5 then it is a south pole, i.e. 15°, 45°, 75°, etc."