Bombing - Students' Manual, US Army Air Force Training Command WWII Mosquito The B-11 indicator was used

The B-11 indicator was used across all Air Corps dual engine aircraft

dated Nov 1948

The written content of each drawing is in Japanese with some English annotations

Here is a Type A-3 Wheel and Flap Position Indicator used in WWII aircraft of the US Army Air Force with a tail wheel (vs nose wheel aircraft)

it appears identical to the one illustrated in Robert Mikesh's book Japanese Aircraft Equipment 1940-1945

Bombing - Students' Manual, US Army Air Force Training Command WWII Mosquito The B-11 indicator was usedThis is an original Students' Manual for Bombing published by the US Army Air Forces Training Command in bombardier schools during WWII. This ~3 4 inch thick manual covers all topics necessary to effectively train a WWII bombardier in theory, equipment, use, and maintenance, including the M Series (Norden) bombsight. It is in exceptional condition given its age. All pages appear to be intact.