[Ken] recently obtained an attitude indicator—sometimes called an artificial horizon—from an F-4 fighter jet. Unlike some indicators, the F-4’s can rotate to show pitch, roll, and yaw ...

[Ken] recently obtained an attitude indicator—sometimes called an artificial horizon—from an F-4 fighter jet. Unlike some indicators, the F-4’s can rotate to show pitch, roll, and yaw ...

An artificial horizon for sea use has been wanted for ... heavenly bodies be made on the exact center of a bubble or other indicator of the horizontal is a feat that only the exceptionally steady ...