How do blade shapes vary with length?

[Query]

I started a discussion on another board about how (new) blade shapes vary with length. So far one person has offered to measure their old (used) blades, but no one has responded who actually knows.

Does anyone here know?

Is there any variation of rocker radius, length of rocker sections, or positions, as length changes, within a given brand and model?

If there isn't, then, for example, on many blades, the point where you are on the rockered section, when the toepick starts to touch (which some coaches teach is where you do turns, and where many coaches teach you should do a scratch spin) would be in the middle of a very short foot, but maybe in the toes of a very long foot. (That's assuming a specific convention for full custom boots in which the front of blade mounting plate is at the front of the outsole, which is in turn the length of a radial projection of the skater's foot. I.E., the front of the mounting plate radially projects to the front of your toes too.) Yet many coaches tell their students to use the same model blades they use, even if their feet aren't the same size.

So, is there some type of scaling, and if so, exactly what?

I haven't been able to find a source on this.

It would be wonderful if someone here with full access to a pro shop could scan (at as high a resolution as possible) a short and long new unsharpened blade of the same model, and place the images somewhere (right now skatingforums doesn't seem able to attach images any more - I couldn't even attach the small one I linked to in my recent thread on 7 & 8' rockers).