[unapiedra]

All of you talking about how much it costs American (and other) companies to change and just use metric are somewhat right. But think about it what it costs to have two standards at the same time. Because you could give all your reasons why companies still use the imperial system can be given about two systems as well.

What I mean to say with that? -- If you need to have tools (and bigger tools in a production plant) in two systems, you need to pay for both. If you have screws and other material in both systems you are practically paying twice. Sure you can substitute somethings but still, it's having two system which makes the least sense.

I am not saying that it doesn't cost money to change to one system, I am just saying that it might eventually be cheapper to change than just pushing the problem away untill it comes up the next time.

--Just my two cent.