Silhouette Handbook of US Army Air Forces Airplanes TO 00-40-1 1942 Sunderland P2V-5F Neptune Antisub aircraft

P2V-5F Neptune Antisub aircraft

It was for aircraft with shallow/slow climb/descent speed i

The single pointer would indicate true magnetic north

See the image from the B-26 Flight Manual dated April 1945

As the airspeed increases

Silhouette Handbook of US Army Air Forces Airplanes TO 00-40-1 1942 Sunderland P2V-5F Neptune Antisub aircraftHere is an original WWII era recognition manual, the Silhouette Handbook of US Army Air Forces Airplanes, dated September 1942, Technical Order No 00 40 1. The manual illustrates 48 aircraft of the USAAF in service or experimental as of Sept 1942, including combat aircraft B 17E, XB 19, B 25, A 20, P 35, P 51, cargo and liaison aircraft, and training aircraft. Each aircraft is illustrated on a dedicated page. The 8. 5 x 11 inch manual is in reasonable