John Schmitt wrote in message
...

Duh. My memory is at fault. I knew it was ISO or DIN which
skipped 9mm and indeed quite a lot of integer sizes above that
and thought it was ISO. Can I claim that the hot weather caused
me to mistype DIN in an egregious manner?

You can claim whatever you like. Whether you are believed is a matter for
the jury...

However, IMHO, the value of having a knowledgeable resident group chemist
far outweighs such minor transgressions, so yes you can be let off (just
this once, mind).

--
Andy