Aircraft Recognition Poster, Kawanishi Type 97 Mavis Japanese Patrol Bomber, 1943 Short Sunderland The unit requires calibration as

The unit requires calibration as we are unable to adjust it to view the sky in the viewfinder

please rely upon your own research

The indicator has a serial number prefix of "44" evidence of a year of manufacture of 1944

This is an original WWII-era manual

was the key factor in Air Force attempts to equip modern bombers with a truly integrated bombing-navigation system

Aircraft Recognition Poster, Kawanishi Type 97 Mavis Japanese Patrol Bomber, 1943 Short Sunderland The unit requires calibration asHere is an original WWII era Recognition Poster for the Japanese Navy's Patrol Bomber Seaplane Kawanishi Type 97 Mavis as published by the US Navy Jan 1943. The poster displays 4 recognition images. The poster measures ~18. 5 x ~25 inches. It is in good condition for its age.