Analog trigonometric circle

Warning the colored version is supperior and the single color version won't be as usable (although still interseting). This is my third sinus and cosinus convertor, you would think I would grow tired of them but I keep having new ideas that prevent me from sleeping so I have to build them (I made four in total). This time I have managed to be much more space efficient and user friendly. It is litterally the trigonometric circle and although there is still the curve problem whiwh makes the reading difficult for some values. I think I have come up with an elegant solution but it isn't quite ready yet. In the near future I am going to release the fourth version which solves all of these issues (but is much more complex, maybe a bit to much).The assembly is really straight forward and is shown in this animation: Basically, the clip secures the 2 pieces together. The path that you can see is much clearer with the colored version and is nearly a circle (it couldn't be one because