[Boatanchors] ID this Marine direction finder ?

[Pete Lancashire]

Anyone seen one of these before ? This was at a ham swap-meet and
couldn't justify the $100 the seller wanted and I couldn't stick
around
to try again later.

https://picasaweb.google.com/111617808980322733757/Misc#5597058761590397618
https://picasaweb.google.com/111617808980322733757/Misc#5597058921438654162
https://picasaweb.google.com/111617808980322733757/Misc#5597059093191213042

-pete