Originally Posted by
Graceland
I've used both before now and have a BAR one in the cossie.
Scale is -1 to +2 bar and it reads off the scale in both directions
If you're technically minded then you can easily change between BAR and PSI mid conversation and still know what the numbers mean
PS - 2.2 bar FTW

Your gauge must be wrong then, if it reads over 1 bar vacuum, even on overun.
tabetha