Originally Posted by
Evil Twin
From the spec sheets provided by wrench those are astrometric screens. I've used them in the 429 and they are far superior and much more reliable than the Rogerson kraptos in the EPI.
Bell have dumped RK junk and gone full Garmin on 505, 407, 429 and 412, all interchangeable between aircraft and coming up with converter kit to fit Garmin into machines with RK stuff.