Cleaning out the hangar - This is a new, Electronics International, EC-1P CHT/EGT gauge.  It displays one channel each of EGT and CHT.

The unit is full size for a  3 1/8 hole in the panel.

You can use a switch that EI sells to set it up as a multi-probe unit with up to six each EGT and CGT probes.  The install manual explains all that.

I installed a similar unit in my Citabria using the EI switch and that works great.  It makes a simple, reliable, low cost engine analyzer.

I can't remember why I bought this but I never installed it for whatever reason, probably changed direction in the project. Don't have the original box, not that it was anything special..

I only have the one EGT probe so you'll have to scare up the appropriate CHT probe for your engine.  

EI stuff uses type K thermocouples for all their temperature sensing and probes are easy to come by. 

Shipping is $15 by UPS ground to CONUS.  AK and international by actual cost. 

Let me know if you have questions.

Thanks for looking.