Compass, Magnetic Direct Reading, US Navy Mark VIII (2) HH-3 Helicopter This indicator has a service

This indicator has a service label stamped April 1945 on its rear

The camera itself appears to be in good cosmetic condition

made by Sperry part number 668899

observers could determine the location of friendly aircraft using triangulation

This indicator appeared in early versions of the TBM and can be seen in this TBM/F training video at minute 6

Compass, Magnetic Direct Reading, US Navy Mark VIII (2) HH-3 Helicopter This indicator has a serviceHere is a fine example of the US Navy's Aircraft Direct Reading Magnetic Compass Mark VIII, as used in the SBD Dauntless Dive Bomber and the TBM Avenger Torpedo Bomber. This compass was installed above the pilots forehead, see image of the SBD's cockpit showing the location of this compass. This model was designated AN5732 1 later in WWII. The compass was illuminated electrically via bulb (included but operation unknown) mounted in a small compartment