Well, having worked in hydraulic fittings at one time....it's STILL somewhat like that, you got yer metrics, yer standards, yer "british standard" and a buncha wild crap like that - and you dare not screw up cause the wrong replacement for a 300PSI line means someone might get hurt, badly.
And Don...you ever own a Tomos ? it's the main reason WHY I got both a metric and a US Toolkit....this Targa's a bit more messed up than normal about that, tho...lots o under-the-surface jack-riggin once I started tearin it apart real good.
-R