Helmet methodology

[Tarbicus]

That's a really good idea. Would this be a very vague start, or the kind of thing you're thinking of to add the terms to?

[url:3b0ek9tt]http://i75.photobucket.com/albums/i311/tarbicus/reference_points_01.jpg[/url]

I would also suggest, off the top of my head, that a common point of reference between all helmets would be where the front bowl cutout for the earguard meets the bottom of the front bowl's bottom rim. Or, midway along the front bowl bottom rim at the very front. This puts a common reference point relative to a part of a person's anatomy (the nose or the ears). As the ears have a centre point between them anyway I would favour the former.