B-17F Flying Fortress Familiarization Manual 1944 BT-12 which leads to a conclusion

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This listing includes the Computer (part number 12580-3) and the Handbook of Operation and Service Instructions T

The company had been working on the APS-23 since mid-1945 and also intended to use this radar in a combined optical and electronic bombing system to be operated by one man

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A Hohenschreiber is a height-recording instrument that is essentially a barograph

B-17F Flying Fortress Familiarization Manual 1944 BT-12 which leads to a conclusionThis is an original WW II era Familiarization Manual for the US Army Air Force heavy bomber Boeing B 17F Flying Fortress. It is a serial number controlled document issued Oct 26, 1944. Included is a Center of Gravity Computer dated 1942. This 156 page, 8 x 5 x ~0. 5 inch manual contains all of the essential information for operating the B 17F. This manual is in very good condition. The brass colored lettering on the cover is somewhat tarnished, but