Gun Sight, Reflector, Type N-6A SB2C Helldiver The serial number prefix

The serial number prefix

The manual covers instruments that were eventually used in aircraft of the Air Corps US Army and Air Force US Army during WWII

as used in aircraft of the US Navy such as the SBD Dauntless Dive Bomber

This is a mechanical WWII-era aircraft clock

It red lines at 110degC

Gun Sight, Reflector, Type N-6A SB2C Helldiver The serial number prefixHere is a fine example of the Reflector Gun Sight, Type N 6A, as used in gun turrets of aircraft of the US Army Air Force during WWII. From our friend Laurent at Aircraft Gunsights. com: "The N 6 was the first of the N series to be specifically designed for flexible gunnery for use in turrets not equipped with compensated sights. AAF Material Command also requested the N 6 to replace the old iron sights on all other gun positions in medium and heavy