[USMA:36438] Is the bar a metric unit?

[Mike Millet]

I was watching a show the other day where an engineer mentioned the pressure in a tank was 250 bar. I thought about it for a minute and I remember hearing that the unit of pressure in SI was the Pascal.  However, we measure pressure in millibars (or inches if you want to be really old fashioned)

Is the bar an SI unit? or is it one that was adopted into SI? Would it be correct from a metric engineering standpoint to use the bar or would Pascal be correct :)?

Mike

--
"The boy is dangerous, they all sense it why can't you?"