Im sure you will be fine. Better to have a 3 incher and know how to use it than a bigger size incapable of doing so. If that fail move to Japan or some other Asian country youll be grand
Actually, I made a boo-boo. It's 3mm. I was using metric ruler, not imperial.
I'm pretty sure that's about average. Right?
I have a whole tin full of Fishermans Friends
if you are talking 3inches well one inch is 25.4mm x 3 =76.2mm metric so 76.2x2 =152.4mm thats six inches thats the best way to work it out its is no way 3mm amigo your maths don't make sence