[sdiy] [OT] Name that tube

[Toby Paddock]

Thanks to everyone for helping Bob the Tube 
find out that he is indeed a vacuum gauge. 
Sounds like a tough gig.
He has since retired and is now on the 
lecture circuit.

Later,
Toby Paddock

> 
> http://www.seanet.com/~tpaddock/public/tube0187a.jpg
> http://www.seanet.com/~tpaddock/public/tube0185a.jpg
> http://www.seanet.com/~tpaddock/public/tube0184a.jpg
> 
> Any idea what this thing is?
> 
> My first thought was some kind of electron 
> gun. But no, there's nothing pointing at the hole.
> 
> Then I thought maybe a vacuum gauge.
> 
> Then maybe a pull-your-own-vacuum triode. For some 
> experiment or training. Is that a Navy logo on it?
> 
> Now I'm back to thinking maybe a vacuum gauge.
> 
> ?
> 
> Later,
> Toby Paddock
> 
>