This is an original 1940s Esso Aviation Fuel Time & Distance Computer, a classic piece of aviation history that combines practical navigation with outstanding period advertising. Produced as a promotional giveaway to pilots purchasing Esso Aviation Gasoline, these handy flight computers became a familiar sight in the flight bags and jacket pockets of civilian and military aviators alike.

Measuring approximately 4½ inches in diameter, this circular slide-rule computer is marked "Esso " and is complete with both sides intact and fully functional. Designed as a compact flight aid, it enables pilots to quickly calculate time, distance, ground speed, true course, pressure altitude, fuel consumption, fuel endurance, and numerous other essential flight planning solutions. Before the advent of electronic calculators and GPS, devices such as this were indispensable cockpit tools and represented the latest in practical aviation technology.

The computer remains in excellent overall condition, displaying only honest signs of age while retaining a pleasing vintage appearance. The markings are clear and legible, the rotating components operate smoothly, and it is ready for display or actual use. Its compact size makes it ideal for carrying in a flight jacket pocket, just as pilots did during the 1940s.

Original aviation advertising pieces from major petroleum companies such as Esso are becoming increasingly difficult to locate, especially examples that are both complete and fully functional. Whether you collect vintage aviation memorabilia, pilot navigation equipment, oil and gas advertising, or WWII-era flight gear, this is an attractive and historically significant addition to any collection.

A fine original piece of 1940s aviation history that displays beautifully and represents an era when skilled navigation depended upon tools such as this. Don't miss this excellent example. All items sold are 100% guaranteed.

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