If you do a lot of knitting, you might be aware that there exist different numbering systems for needle sizes – in mm, UK and US sizes. So a size no. 4 is what? 4 US, 4 UK or 4mm?
As I started buying needles (especially in India, where different numbering systems are prevalent), I realized one should have their knowledge of the different systems right, not just for buying the correct needles but for writing pattern notes as well.
I have attached a needle cheatsheet for your reference! Hope this helps in making your communications better.
Have a fun time knitting!
Image reference: stitchgeek.com