B-17F Flying Fortress Familiarization Manual 1944 BT-12 The autopilot flight controller was

The autopilot flight controller was used by the pilot to turn and trim the aircraft while in automatic pilot mode

which leads to a conclusion of a misprint

It is in good condition given its ages

two tachometer tips

This booklet was written

B-17F Flying Fortress Familiarization Manual 1944 BT-12 The autopilot flight controller wasThis 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