need help identifying device

[WSHU Engineering2]

Is there any equivalent number for the 3581 tubes?

I suspected Diathermy,  Yes the center plate seem to be ceramic/asbestos 
board, something I never worried too much about, its not very friable.  I 
wouldn't suggest doing  something stupid like try to drill holes in it 
though. I find more of the fluffy white stuff in consumer sets. Zenith used 
to put a layer of asbestos cloth under the chassis of a lot of their radios 
even if there were no hot resistors, maybe they expected a lot of flameouts

----- Original Message ----- 
From: "Jim Bromley, K7JEB" <k7jeb at COX.NET>
To: <BOATANCHORS at LISTS.TEMPE.GOV>
Sent: Monday, September 29, 2008 12:50 PM
Subject: Re: [BOATANCHORS-TEMPE] need help identifying device


> WSHU Engineering2 wrote:
>> > My assistant  Tony just picked this Frankenstein device up at a live
>> > auction.....
>
Snip 

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