I got this in a batch of stuff I acquired and I cannot find any information on it. It has a date on the badge "6-22-39". Its called an "Impedance Measuring Unit" type number "CA323". It came with the original instruction book for it too! I'm just curious if there's anyone out there who's seen something like this and perhaps would have any more information on it.
http://s1135.photobucket.com/albums/m632/zebrostripe/Impedance%20Measuring%20Unit%20CA323/
Thanks for looking.
-z