[JMS] Millen 90640 Frequency Determination Unit - Do Any Exist?

[Don Buska - The Radio Lab Works]

Has anyone ever seen this beast, or was it yet another item that was in 
the Millen catalog but never seen the light of day?  It's a hybrid of 
the old Frequency Meter, standard crystal oscillators and an HF 
Receiver.  I just saw this in the Millen 1946 - 1947 Electronic 
Laboratory Equipment Catalog that's for sale on eBay right now. I did 
snag a picture of the unit and the description from the eBay ad and have 
it on my website for your review.

Picture of the 90640 Frequency Determination Unit:

https://www.radiolabworks.com/files/Millen/90640%20Picture.png

Description of the unit:

https://www.radiolabworks.com/files/Millen/90640%20Desc.png

Personally I've never seen one, but that's not to say this wasn't a 
special contract build for Millen and they just decided to put it in 
their catalog.  That wouldn't be the first time for them.  Also of note 
are some similarities to items incorporated into their two ham receivers 
that were advertised a year later, but that also never made it to formal 
production. I can't imagine this was a low cost item!

Enjoy es 73
Don N9OO