Quote:
Originally Posted by vortalexfan
I have an old Capehart Console that has a similar Dial arrangement where the dial glass is normal dial glass material but when the unit is off the pointer isn't visible but when you turn it on the pointer is red line that moves across the dial.
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There was many radios that had dial indicators that only were visible when the set was on. The early Philco's had an insert behind the dial with a slit that made a distinct line when the set was on. My favorite will always be the big airplane dials, but these other one's are interesting too.