Bomb Sight, Course Setting, Mk VIIC British RAF 1940, "Wimperis" Northrop As the engine speed increased

As the engine speed increased

This compass is New Old Stock and is in its original box with matching serial numbers

The lettering is slightly worn away

The face of this indicator is similar if not identical to the mach indicator seen on the instrument panels of the Avro Vulcan strategic bomber and the Hawker Hunter jet fighter (see photos)

Bomb Sight, Course Setting, Mk VIIC British RAF 1940, "Wimperis" Northrop As the engine speed increasedThe Course Setting Bomb Sight, Mk VIIC was used in British RAF and Royal Navy and RCAF bombers during WW2, such as the Short Stirling, Fairey Battle, Bristol Beaufort, and Avro Lancaster. It is a complete kit the drawer in the wooden case contains the metal scales with different ranges of True Air Speed and Altitude which were planned for the bombing run. These had to be selected and installed on the sight well before the final approach. This