Bomb Release Interval Control Panel Type B-2A PZL and the commander had one

and the commander had one in his hatch

See diagram of A4D-1 instrument panel from its flight manual dated 1962

see illustration from the B-17G Erection and Maintenance Manual in the photos

indicates the manufacturing year 1942

and C-7A Caribou

Bomb Release Interval Control Panel Type B-2A PZL and the commander had oneThis is an original WWII era Bomb Release Interval Control, Type B 2A, as used across nearly all US bomber aircraft, including B 17, B 24, B 25, B 26, and B 29 and any US Navy counterparts. The Bomb Release Interval Control permitted a bombardier to control the number of bombs dropped per release and their impact spacing. This would be used to set up a carpet bombing run, for example, over a large railroad marshalling yard, vs a more concentrated drop