I got an email from a user who was confused about what the spoke angle measurements were, and while I was looking into it I found and corrected an error in the measurements (it happened when the spokes rotated all the way around the hub, something that would never be laced in the real world).
However, I realize the wording I used doesn’t distinguish the terms well. I’d love for some input on how to better describe them, but here’s some pictures to illustrate the issue:
Spoke Angles perpendicular to Rim - Imagine a radial spoke being 0 degrees (you can see this number go to zero if you select Radial). This measurement is how ‘off Radial’ the spoke is, while looking at the side of the wheel like in the display on the page.
Here’s a picture: