[Milsurplus] “Down Periscope” movie - equipment ID??

[Nick England]

https://www.youtube.com/watch?v=zysOEUd1YwQ
and
https://imgur.com/gallery/qowVxb1

What are the black face units in the center (with a VU meter?)
On the left and right are UGM-8 teletype test sets and URM-25 signal
generators.

Cheers
Nick
-- 
Nick England K4NYW
www.navy-radio.com
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