This is a extremely rare, Imperial Japanese Navy - Course Altering or Compass Vector Bombsight. This Type 2, Kai-3 was manufactured by the Tokyo Keiki Mfg Co Ltd in 1932 as Japan was building up its naval power.
This is the only know existing example of this model bombsight. This bombsight would have been mounted to the outside of the aircraft for the pilot or bombardier to adjust the heading and speed of the aircraft in order to target ships or ground objectives. It was used low and slow for best accuracy. The bombsight is all original and complete in the wood cases with matching serial numbers. It includes the wood case, compass bombsight, magnetic rods, targeting rod with cross-hair, some tools, a leather strap, and the Test Report.
The bombsight itself in excellent operating and cosmetic condition. At some point the compass glass was cracked, but the compass still operates. The paperwork attached to the inside of the case will come with a full translation.
This was probably brought to the US by a serviceman as a souvenir at the end of the war. Incredibly rare and desirable IJN artifact for a serious collector.
The item "ULTRA RARE, PRE WWII IMPERIAL JAPANESE NAVY IJN AIRCRAFT 1932 COMPASS BOMBSIGHT" is in sale since Wednesday, January 22, 2020. This item is in the category "Collectibles\Militaria\1919-38\Original Period Items". The seller is "2gr8guys" and is located in Los Angeles, California. This item can be shipped to United States, all countries in Europe, Canada, Japan, Australia.