@Huck:
Not if you have those little balls on the center post to align yourself......
We're supposed to put our heads in the same position using known sightline references,
Flawed again... Aligning those 2 balls can ONLY put your eyes somewhere on a line (2 points in space define an infinitely long line). You are free to move your eyes along that line, whilst keeping the balls perfectly aligned.
As pilots move their heads along that line (still with your balls perfectly aligned, remember, oh er missus!) you are introducing an error about 100 times larger in predicting where the wing tip is supposed to be.
As I said earlier, it is a highly flawed technique, based on very shaky assumptions. Maybe the AF captain was trying it as he taxied into his mishap?