Just a correction to the name, it's TruTrak and the URL for the page
(if I have it right) is

http://www.trutrakflightsystems.com/...struments.html

I found this out by googling on "TruTrack artifical horizon" and Google
was kind enough to ask me if I meant TruTrak. I also had trouble with
the URL on the next msg, involving stratomaster.uk. My browser came
back with "cannot find the site" type message.

Martin