[ARC5] Odd Aircraft Radio Corp. Vacuum Cap

[Mike Hanz]

It's from the A-61A (ARC #7777) dummy load for the SCR-274N, Dave.  
Value is 100 mmfd.

David Stinson wrote:

> There's an odd, thin vacuum cap over on the 'bay place:
>
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2263600741
>
> Too long and thin to be from an ARC-5 set.
> Anyone have any ideas?