A new company called Aerovonics has developed inexpensive miniature EFIS instruments for light aircraft, including one that fits into a 2-inch instrument hole. In this AVweb video shot at AirVenture 2018, Bill Shuert explains the company's two new products.
This is a companion discussion topic for the original entry at https://www.avweb.com/multimedia/votw/innovative-miniature-efis