Instrument Calibration for Bombardiers, USAAF Manual RAAF This is a pre-WWII Type

This is a pre-WWII Type B-7 Cylinder Head Temperature Indicator as used in aircraft of the US Army Air Corps before and during WWII

a supersonic air-to-surface missile

dated Oct 29

The permanent magnetic speed indicator contains a fixed permanent magnet

It is missing the bubble mechanism

Instrument Calibration for Bombardiers, USAAF Manual RAAF This is a pre-WWII TypeThis is an original WWII era manual of Instrument Calibration for Bombardiers, published by the US Army Air Forces Training Command. This manual instructs student bombardiers on the calibration procedures for the aircraft instruments upon which he will rely to effectively perform his duties. This manual is in very good condition given its age. About 30 pages in length.