10-18-2015, 11:28 AM
Yes, Ron, I have an old Z brand highboy console, a 410 from 1933, like this, http://www.radioatticarchives.com/radio.htm?radio=6019 , that uses a shadow type tuning meter. It has a solenoid type set up with a coil, and a center slug that is drawn inward as the current through the coil increases and increases its magnetism. This internal slug is in turn connected to a little metal vane that turns and causes light to shine in a wider or narrower band on a translucent screen, much like Philco's set up.