Bomb Station Distributor Selector SD-1 for TBM Avenger C-45 The knob rotates a small

The knob rotates a small indexing pointer around the perimeter of the dial (sitting at 5 G's in the main photo)

a winder and duration-selector is visible at the bottom of the recording drum

This is an interesting WWII-era Directional Gyro

The master unit holds the magnetic element

Protection for the airplane against damage from its guns

Bomb Station Distributor Selector SD-1 for TBM Avenger C-45 The knob rotates a smallThis is an authentic WWII era Bomb Station Distributor Selector SD 1 as used in the US Navy's TBM Avenger multi purpose carrier based bomber. The Distributor Selector was located in the TBM's bombardier's compartment behind the flight deck. See photo and page from the TBM manual showing its location. According to the TBM Avenger Flight Manual date Nov 1944, the TBM could carry bombs in the following configurations: 12 100 lb bombs, 4 500 lb bombs, 1