NJ was home to hundreds and hundreds of machine shops, tool & die makers, etc. up until 20 years ago or so. From the looks of that thing, the fact that the metal isn't finished like a finished product, I would guess first that it was a "special machine" -- what the machine shops used to call any kind of custom built device for manufacturing, packaging, spooling, or whatever. The fact that the rotating things look like tuners or amplifiers throws me for a loop. It's quite possible this is a one-of-a-kind item, built to order by a local machine shop or fabricator for a specific function as specified by a small manufacturing firm. In which case the answer could prove to be quite elusive!
whatever it is, it cost a pretty penny to build
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