Hi,

I was deep digging in my garage and pulled out what I had been assuming was a low-voltage transformer.  On cleaning I found the terminals labelled 0-115-190-200-210-220-230-240-250 with continuity all the way through.  It looks to be in the 500W class.  On removing it from the steel box it was roughly cobbled into, I spotted the Navy anchor stamp.  

It strikes me as something to run 115V equipment off of a not-well-controlled 220V supply.  I can see in my mind's eye three of these things in a row on a bulkhead, perhaps to bring the 3-phase ship's power down to 115V

No nomenclature I can find.  

Has anyone run across something like this?

RF