It is surprising how much more durable 0.7mm is compared with 0.5mm: much less likely to snap on you halfway through a line so it is if anything more accurate, less annoying and more economical.
It is surprising how much more durable 0.7mm is compared with 0.5mm: much less likely to snap on you halfway through a line so it is if anything more accurate, less annoying and more economical.