Bell & Howell MK30 torpedo director

[ormswyn]

Trying to find any info on this Bell & Howell MK30 torpedo director

 

[MiTasol]

Try the National Air and Space Museum at the Smithsonian.

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airandspace.si.edu

 

[Gunsights]

Used in WW2 Torpedo bombers like the
TBM/TBF Avenger.
If for sale check my Message.