Genuine WWII aviation artifact. Navigation computer. Boeing B-17 Flying Fortress & Consolidated B-24 Liberator Measuring 8" in diameter, this AN-5837-1 Altitude Correction Computer was manufactured by G. Felsenthal & Sons, Chicago, and is in new old stock condition. Museum Quality. This is a stock photo. The item you will receive will still be sealed in its original packaging. Made in the USA.