No doubt you have heard of Oxford loudspeakers... well..
"Paul Tartak
Between 1930 and 1935 Paul Tartak bought Oxford and changed the name to Oxford-Tartak Radio Corp. Joy, Augustine, and Reichmann all went in different directions.
Tartak arrived from Lithuania in 1909 at the age of four. After graduating from Univ. of Illinois in 1928, he worked in Chicago as a radio engineer. The company's focus was radio replacement and PA speakers, electro-dynamic and permanent magnet speakers, exponential horns, and field exciter units. In the thirties, Chief engineer was C.T. Harwood, and the Sales Manager was J.S. Gartner. ".
from this site:
http://www.magnatoneamps.com/manufacturers.html
Your meter could have been made under a military contract:
AN 08-45-40 Condenser Tester Oxford Tartac CT-400
from list here:
http://radionerds.com/images/5/5c/TO-DOC_HTM.txt
It was somewhat common practice for copycat manufacturing of various producs for government contracts, for example Hickok produced copies of a Tektronix 545 oscilloscope and related plug-ins for a government contract. Tek sued Hickok and the government and won. (4 million)
jr
another Oxford Tartac copycat device for the government:
http://k4che.com/Oxford%20Tartak/Oxf...20Receiver.htm
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