I suspect he had a little gizmo called magnetic compass, though that one would measure the magnetic pole, not the true pole. Difference between those 2 are 17 d

I suspect he had a little gizmo called magnetic compass, though that one would measure the magnetic pole, not the true pole. Difference between those 2 are 17 degrees if my memory serves me correctly. More info here: https://airplaneacademy.com/whats-the-difference-between-true-and-magnetic-heading-explained/ https://airplaneacademy.com/whats-the-difference-between-tru...