Well DIN Standard is basically like the ISO Standard - an almost infinite system of all kinds of standards.
I would have assumed that you would credit me with having enough functioning neurons strung together to at least understand that much.
I did my best trying to find WHICH exact DIN standard applies to the article you wrote but it is pretty much impossible to research that without paying a couple of hundreds of euros to buy the documents.
I've spent way more than that on switches, but maybe that's why I'm writing this from my padded cell.
The smaller keycap families from Signature Plastics have names beginning with "D", which literally stands for "DIN standard". Omron wrote this of B3G-S: 「DIN規格に適した全18.1mmのロープロタイプ」 — Google's understanding of this today is "Total 18.1 mm rope type suitable for DIN standard", which is funny, as originally it translated to "Low-profile type of all 18.1 mm suitable for DIN standard " (they must have introduced a bug since then). Again, though, just "DIN standard".
It's more than just the keyboard profile — there have been complaints here that the Germans stamped out anything pretty, which is why all the nice colours we saw in the 70s and early 80s died out. As I recall, jacobolus made those complaints, but again, never detailed any evidence for these claims. I don't know what he read or where he read it, or if it's even true.
I wrote about it previously here:http://telcontar.net/KBK/size.php
From what jacobolus was saying, in effect I've got this all wrong, so I've declined to document anything beyond the barest minimum page needed to hold my diagram, pending someone finally shedding some light on the magnitude of my blunders in this regard.