So here's how this works.. The bush has a hole under 3 degrees, the axle as well. So with the axle in the bush.. both angles can be in the same direction, which makes the total angle 6 degrees. Or in opposite direction, which makes the angle zero degrees... Anything in between is possible by rotating the axle and the bush in contrary direction. That way the camber of the wheel can be adjusted quite accurately between 0 and 6 degrees.
So here's how this works.. The bush has a hole under 3 degrees, the axle as well. So with the axle in the bush.. both angles can be in the same direction, which makes the total angle 6 degrees. Or in opposite direction, which makes the angle zero degrees... Anything in between is possible by rotating the axle and the bush in contrary direction. That way the camber of the wheel can be adjusted quite accurately between 0 and 6 degrees.