[David Simpson]

This ancient piece of test equipment has raised many questions :-
a) Who were the Tottenham Wireless Society ? Perhaps they were a forerunner of the London WS who eventually became the RSGB ?

b)Did enterprising WS's back in the 1920's make their own T/Eq. ?

c)Who were "Experimental Wireless" ? Did they make T/Eq. back in the 1920's ? As well as offering a calibration service.

c) On the rear of the Ebonite panel in the bottom R/H corner is Registered Trade Mark - RADION (ACE) PANEL the "ACE" is actually etched inside an Acorn Logo.

d) The Dial was made by the AMERICAN HARD RUBBER Co. New York, and is stamped RADION No10 .

e) Perhaps the Tottenham WS, or Experimental Wireless imported the wavemeter from RADION in the USA ?

f) The mahogany wooden case seems to be bespoke made just for this item. No evidence of it being altered from some other use.

Regards, David

PS. Googled "RADION" - Seemingly it was the trade name for the Ebonite-like panels produced by the American Hard Rubber Co. of New York back in the 1920's. Then there was the American RADION Valve manufacturer. Were they one & the same, perhaps ?