[Milsurplus] Curious what this originally went to

[brianm@carsoncomm.net]

Hello to the groups,

I was wondering if anyone could tell me what this tuning knob was originally
mated with.  I aquired one awhile back and it works fine on the command
receivers, but the scale on it is not linear to any of the receiver dials.
The one at the link below is NOS dated 1/67. The dial is a larger diameter
(1.22") vs. a 6743 (1.0").  Anyone seen one of these before?

 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2215503620

The one on auction is not mine, it just raised my curiousity level.

Tnx,
Brian    wj0p