In article ,
Ben Jackson wrote:

On 2005-03-27, Ron Garret wrote:
backup plan. Obviously a portable GPS and Comm unit are first on the
priority list, but I'd also like to get a portable AI, since it's really
hard to keep the wings level with just a GPS.

I built a solid state turn coordinator with LED display that would run
for about 24 hours on a pair of alkaline batteries. I never got around
to moving it off the breadboard and into a nice package. There is a
company that sells something I suspect is very similar. It's about
the size of a deck of cards with row of LEDs on one edge, but of course
now I can't find the name of it.

This perhaps?

http://www.pcflightsystems.com/egyro.html

It's $500. Is that a reasonable price?

rg