I've been using a dual EGT from WESTACH. Can't remember where I got mine but I know they're often available on e-bay (in the states). http://www.westach.com/gauge_images/2DA2.jpg

Scary photo of NZ. Looks similar to the Easter earthquake in Mexico/San Diego. Photos showed dust rising from the tops of mountains and ridges. Thoughts to all those that didn't survive.