When I was in high school last century our electronics lab was kitted with all Stark test equipment. Some Stark tube testers were made under licence from Hickok.
Here's another example of Canadian test equipment. This is the RCAF version of the American BC221. It is direct freq readout though, doesn't require a calibration booklet. Covers from 500 Kc to 100 Mc directly and using harmonics and sub harmonics.
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