The metric system.

[Massive Lee]

Standardization is the best argument. If you live n a rural environement and the loal dealer is a Ford dealer, then even though BMWs are the best cars, I suggest to buy a Ford pick-up truck, wich would be the local standard with all associated service.

Same with Metric/SAE standard. Metric is finer and easier to understand, but if all suppliers and CNC shops work in SAE, then go SAE.

That being said, all my drafts are in metric, and it kills me when machineshop talk to me in inches...

Lee

[Collin]

Typically when I'm doing work and I need an american socket of which I do not know the size, I'll guess in metric and find the closest american size.

I just can't make sense of 3/57" and 423/7308", even though I grew up with this system.

10mm and 8mm is just so much simpler. Hell, half the new american cars I've worked on have been in metric anyway.

[EricT]

Ehh.....I use either. But when working on cars metric does seem simpler. Telling my 4yr old, honey grab me the one with the number 8 on it is so much simpler then to say...honey the one with a 5/16 on it. It alleviates alot of confusion on her part. I just have a huge conversion chart hanging on the wall at work for when I am machining parts. Some of our machines I work on and make parts for are metric...most are standard. But all of our tooling in our machine shop is standard aside from some drills and taps/dies and what not.