On Saturday, November 7, 2020 at 10:27:33 AM UTC-8, John Galloway wrote:
 On Saturday, 7 November 2020 at 17:48:16 UTC, Eric Greenwell wrote:
  Richard Pfiffner wrote on 11/7/2020 8:41 AM: 
   LXNAV 
   
   Indicates airspeed, altitude and vertical speed with an integrated high precision digital pressure sensors. The unit has standard dimension of 57 mm diameter. Not TSO. 
   
   Many features see 
   
   http://www.craggyaero.com/air_data_indicator.htm 
   
   Richard 
   www.craggyaero.com 
  
  You have to read the manual to discover the vertical speed indicator can be used as a vario 
  (using electronic Total Energy compensation - no probe), or as a standard, uncompensated VSI. 
  No audio, but probably at least adequate as a backup to the primary vario. That makes it a 
  3-in-one combo: ASI, ALT, Vario. That's good news for small panels, and a lot cheaper, too. 
  
  -- 
  Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me) 
  - "A Guide to Self-Launching Sailplane Operation" 
  https://sites.google.com/site/motorg...ad-the-guide-1
 
 Looks like an excellent concept but does it have any sort of approval?   I can't see any mention one way or the other on the LX Nav website or in the manual.
No ETSO for the ADI at this time.  I would say OK for experimental aircraft.
The Air Avionic ACD has a ETSO Altimeter and also controls Transponder/Transceiver.
Richard,
www.craggyaero.com
http://www.craggyaero.com/acd_altimeter.htm