My sister bought one of their size gauges to use at home and I've used it too on my dd. But now I'm really confused, I've read their measuring instructions very carefully and my dd who has the widest feet of any baby I know, and was measured at a H in Clarks a while ago, is coming out at a C. My niece has wide-ish feet and also came out as a C.
I'm confused, if she's a C, then all these other babies must be an A at most, and I can't even imagine what a child would look like who measured at an H! Surely they'd have to have circular feet! 
Has anyone been to startrite to have a child measured or bought shoes from them and what kind of measurement were they coming out at?
I'm really reluctant to buy shoes from their website now as I can't work out what size to order. 