[Amps] arco variable capacitor data

[skipp isaham]

Anyone know of an On-line description for the 
arco type of trimmer caps?  In specific, the 
famous arco 429 and similar series caps 
that have been made for decades? 

These are most often the small square 
units. 

Who, what, where is arco now?  Would 
any on-line parts description be available? 

thanks

skipp 
nospam4me at juno.com 


Also, thank you to everyone for your replies 
to my series connection of four 572b tubes. 

I'm going to help the amp owner with a 
circuit and let you folks know what happens. 


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