An E6B flight computer, also known as a mechanical flight computer, is made from metal, plastic, or cardboard. It can be intimidating to look at and challenging to use at first—but fortunately ...

The mechanical E6B is the more versatile descendant of the government issued G-1 True Airspeed flight computer from World War II. The G-1 was round, about 8 inches across and made from Bakelite ...