28s vs. 48s

HELP!

I have an urgent question with work…and if anyone knows, you’ll save me…

What’s the difference between 48s and 28s cashmere? I think it might be just a difference in systems China and Scotland uses.

I’m a novice…any help with help a ton!

Thanks!

That’s a new one, maybe it’s the yarn weight? Do you have more information?

Sounds like an NM weight?