Needs more pixels. You use Kitty, try something like https://github.com/hpjansson/chafa to render a proper picture?

It’s (Traditional) Chinese.

It can be Taiwan, though lots of Japanese shops put up signs in foreign languages to attract tourists.

But iirc Boeing mainly used US customary? Does it somehow not cause any trouble in the industry but it’s problematic in smaller workshops? Genuine question

No way! You must be a paleontologist!