According to Skylighters. Org: The Norden bombsight was perhaps one of the few scientific instruments, along with radar, ever credited with playing such a large role in the Allied victory in WW II. Prior to the Manhattan Project, the Norden bombsight was America’s most closely guarded secret, an optical device that allowed the U. Army Air Force to carry out daytime strategic bombing with high precision. The bombsight was so secret that it would be loaded onto the plane under armed guard just before it took off and removed as soon as the plane landed. Crew members serving on planes with the bombsight had to take an oath to protect the bombsight with their lives if necessary. This Norden Bombsight is from my private collection, in very fine condition. Included is orginal eyepiece cushion (not photographed). The 5-digit serial number stamp and the data plate match. Leveling bubbles are in good working order. This unit has been powered up. The drift knob shaft located at the base is slightly bent, but works perfectly. I will be happy to answer any additional questions you may have. All photos are taken of the actual item you will receive. We try to accurately describe each item, however, please always refer to the photos. We do our best to respond within 24 hours. Please add those items to your cart, but DO NOT PAY for them. Thank you for your business! We will be away from our store beginning Tuesday, December 17. We apologize for any inconvenience and wish you a Happy Holiday! Thank you for visiting our store! The item “WWII US Army Air Forces Norden Bombsight M9B Matching Numbers 1940s Original” is in sale since Friday, December 6, 2019. This item is in the category “Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment”. The seller is “x-plane” and is located in Palos Park, Illinois. This item can be shipped to United States.
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