The title pretty well covers it, but I’ve noticed that a lot of European countries use commas instead of decimal points when dealing with numbers- especially firearm calibres.
For example, the calibre 7.62x51 NATO (as written in English speaking countries) often seems to be written as 7,62x51 in places like Scandinavia and France
I’ve seen it done with other numbers, too: say, a statistic might state that 4,3% of people with cars also like to put interesting things on the aerial. (instead of the 4.3% way we’d usually write it)
Now, to me, the use of a comma in place of a decimal point just looks wrong- like a combination of a typo and a wilful desire to be different, without really effectively being either.
Any ideas why some of the Europeans are using commas instead of decimal points, or is it just “one of those things”?