Jon,
My genius brother designed the tester and sold a number of them a few
years ago for $600.
Because I did some leg work and helped develop the market, he gave me
one of his early versions. It's still providing  a security blanket
when I need it. Knowing my brother's penchant for quality and
dependability in electronic products, (Electrical Engineer) I imagine
it's still right on.
So far as a meter is concerned, check a couple meters against each
other and decide which is right by flipping a coin.
Seriously, if I have a chance and don't forget, I'll ask a couple
people I know about a meter tester and pass it along.

Jack

--- Jon Myers <[EMAIL PROTECTED]> wrote:

> I'm curious, where did you find such a contraption? Or
> did you build it yourself (if so, got schematics?)?
> 
> Also, is there a contraption that'll let me test the
> meters?
> 
> 
> --- Jack Davis <[EMAIL PROTECTED]> wrote:
> 
> > I freely check the accuracy of shutter speeds with
> > my own tester. It
> > has caused me to send bodies to Pentax for repair a
> > couple times.
> > Obviously, I must remove the lens and open the back
> > to allow the test
> > beam access to the shutter. How could a DSLR shutter
> > be tested?
> > Wouldn't be a major concern for many. If you don't
> > know any different,
> > it's fine.
> > Major problems would eventually reveal themselves.
> > Problems beyond PS
> > fixes.
> > 
> > Jack
> > 
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