Just picked this gadget up at the local junque store. Apears to be an r.f.
tuned cavity. It has a acorn tube inside with marking "5 mA" that I can't
identify. Any info or ideas as to what this might be worth? If nothing, at
least it has a nice barrel micrometer on the end that I can put to use.


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Paul Hovnanian
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Where am I going, and what am I doing in this handbasket?