OLFA 9mm 300 Ratchet-Lock Precision Utility Knife

I saw a friend in architecture school use this and was immediately convinced that's why he was really good at architecture school. I got them and did not get better at architecture school! But you can do menial tasks and precision artsy-fartsy stuff. I have a few of these lying around at all times and actually have flown to other countries with one in my carry on (?!); I just forgot I had it in my bag.