(Mark James Boyd) wrote in message news:4046af83$1@darkstar...

As far as I'm concerned, CH is the only game in town.
I have no idea how Minden get's their stuff World Record
certified; perhaps mailed out of the country?

If you aren't flying a World Record, you don't need that level
of certification for the instrument. Minden hasn't launched any
world records for altitude of which I am aware. Perhaps some
national altitude records for their international visitors, but that is
not the same thing.

For the curious, JC Trinkwalder, of Replogle Barograph service
is also listing himself as a service provider for a variety of
instruments.
Carl does nice work, but it is nice to support all the vendors.

Cindy B