On Sunday, June 3, 2018 at 7:05:10 AM UTC+1, 2G wrote:
On Saturday, June 2, 2018 at 10:26:53 PM UTC-7, Ross wrote:
Why not simply go to Air Avionics?
It is a fully TSO altimeter.

https://www.air-avionics.com/

Enjoy

The ACD-57 is about twice the price of the MGL and lacks an ASI.

Tom

It may be more expensive than the MGL unit but the fully certified AIR display (including altimeter activation fee) is slightly cheaper than a Winter altimeter - and there is the option of using the display to also control a compatible radio and transponder all from one 57mm hole.