[AMRadio] National Knob

W4AWM at aol.com W4AWM at aol.com
Mon Feb 12 11:33:26 EST 2007

Hi Rick,

It was probebly the PW dial which had the vernier built in.  It was a 10:1 
ratio. Sold fopr $7.95 in 1945.  Other dials in the series were the PO-0 series 
which had the gear reduction in a vertical or horizontal arrangement behind 
the panel but used a similar looking dial.


John,  W4AWM

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