Rob Poulussen on Twitter: "Incredible invention. Change to enemy aircraft type, and then aim and fire. A Ferranti IID gyroscopic gunsight in a Spitfire IX. #WW2 #HISTORY https://t.co/ZsMwBtegIZ" / Twitter
Spit Mk9 Gyro gun sight - General Discussion - IL-2 Sturmovik Forum
Gyro gunsight - Wikipedia
UPDATED VERSION! IL2 Battle of Bodenplatte Gyro Gunsight Mk II D - YouTube
WEAPON AIMING for Tactical Aircraft
Gyro Gun Sight Control Unit Type B. MK.10 8B/2970 Ferranti RAF Vintage Aircraft | eBay
File:Gyro Sight Mk I Ferranti.jpg - Wikimedia Commons