[Collins] S-line knob "spring" source wanted

[Dr. Gerald N. Johnson, electrical engineer]

The nearly flat spring for the knob was a common consumer radio item
decades ago. Likely its available from Antique Electronic Supply. There
used to be a GC box of a collection of those for a couple bucks at most
electronics parts distributors. There might be a similar part for the
pull off knobs of modern auto radios and automobile dash knobs, like
heater controls.

73, Jerry, K0CQ, Technical Advisor to the CRA
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Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
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