Some loose dirt specks when looking down into scope, I didn't want to attempt to clean or blow out. Crosshairs look straight and precise. Original placard, plate intact for holding slide in coordinates, MGRS or notes.Everything appears to be in good shape on this TYPE M9B Unit. For best description see pictures please. SECOND (bottom) UNIT: Steel tag reads U. DATE: (scratched off), Insp: GPK(Mark with US anchor), MK 15 MOD 7 No. YELLOW EAGLE STICKER READS: "OVERHAULED, INSPECTED AND TESTED BY OBR, DATE 9-52 NAS, NOR, VA".
Switch, and a unmarked toggle. Other switches/toggles read ON/OFF (for). Multiple gears and arms turn the unit manually or servos do the work on auto-pilot. Attached to wiring harness from unit, with a screw-on wiring plug. Vacant, multi-pin, quick screw-on, plug-in sits to the left of it.
Also a placard, slide in plate for bombing instructions or other sensitive information. Encased, glass circle with dial type indicator and another very small glass circle with bubble for level. NICE CONDITION ON THIS MK15, MODEL 7 UNIT.THIRD AND FINAL LOWER UNIT: Steel support, carrier marked "FRONT" with Military stencil. Carrier has 4 nice condition, rubber shock-absorbing type damper feet. They all look good, no tears and amazingly still feel pliable. Rubber is marked with numerous patent numbers but no name. I'll give a little history on the Norden bomb sight...
Norden MK series bomb sights were primarily used in. World War 2, Korea and more, even up to Vietnam for dropping sensors onto the Ho Chi Minh Trail. The Norden bomb sight was a game changer in WWII for precision ordinance dropping from high altitude bombers. Original designs started around 1929 and continued improving until 1945. The use of previous models forced the bombardier to use a pencil and paper and other various tools to calculate mathematical equations of plane speeds, air temps, plane decent and many other conditions that affect drop point.This method produced a calculated "guess" at where the bomb would drop, with less than ideal accuracy. The new Norden designs were a new world in accuracy, claiming accuracy in bomb dropping from a height of 5 miles above earth to a accuracy range of area within 75 ft. However war conditions proved this to be a little more difficult to achieve these results. The gyro-stabilized sight was linked directly through Automatic Flight Control equipment to the aircraft electronic controls and gave bombardier the ability to "fly" the aircraft over the computer designated release point where upon the bombs were dropped automatically. A canonical tachometric design produced a system that allowed directly measuring of the aircraft ground speed and direction.
Norden further advanced this by using a analog computer that constantly calculated the bombs impact point based on current flight conditions, and a autopilot that let it react quickly and accurately to changes in the wind and more. Accuracy to pinpoint direct daytime attacks on factories, ships and other high value targets proved very valuable. Norden Sights were very Top-Secret during development and were on a similar scale of "Need To Know Only", "High Rank Brass Only" comparable to the secrecy of the "Manhattan Project". The Norden sight was used on Enlola Gay atomic bombing missions over Hiroshima and Nagasaki. You could own this museum quality piece of American Military, World War Two Aviation history!
Free pick-up option is available at my house near Toledo, Ohio. Thanks for looking and good luck! The item "RARE NORDEN BOMBSIGHT With STABILIZER ON CARRIER With AUTOPILOT MK 15, MOD 7, WW2" is in sale since Friday, February 26, 2021. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment". The seller is "tetsefly" and is located in Grand Rapids, Ohio.
This item can be shipped to United States.