old part - dual variable inductor...see pic
I picked this up at a surplus store.
Do you see any use for this?... perhaps in a LC filter ?
Inductance of each pot is varied simultaneously, via a shaft and gears.
(Values of Henry's and it's abbreviations utterly confuse me.)
http://i5.photobucket.com/albums/y17...DSCN3589-1.jpg (click on pic)
Here is the patent..
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