And you had the porthole effect limiting how far to each side you could move your head and still see the reticle. The reason you see only half the length of each cross arm is the projection lens cuts off the last half projected from the internal mirror in real Revi. The Revi in this simulated cockpit is a 1:1 model from Japan. It still shows the porthole effect correctly as the camera is moved side to side.
Another one that looks like a simulator you sit in.