[OM] testing shutter speeds-revisited

[Johnsonpa]

First of all, apologies to the list for bringing this up again.
In any case, after reading the archives I'm fairly confident I'm not 
qualified to build a contraption capable of measuring shutter speeds (at 
least not without _very_ specific directions).  Is anybody willing to loan me 
a 'tool' that will check shutter speeds, curtain sync, etc?
Also, what's the easiest/best way to check meter accuracy (reliably)?

TIA,
--p.j.