C. · @cazabon
177 followers · 4596 posts · Server mindly.social

@koz @3dprinting

I believe they come from ISO 15, which has a complicated formula that gives up to 7 digits and various alphabetic suffixes. Leading zeroes can be omitted, giving rise to common 3, 4, and 5-digit numbers.

Like other ISO standards, officially you have to pay a rather high price to get a copy.

#ISO #overcharge #monopoly

Last updated 1 year ago