The Magic-Eye Tuning Indicator, W G Morley, The Radio Constructor, March & April, 1969:
https://www.r-type.org/articles/art-137.htm
peter_d_sherman•57m ago
The Magic-Eye Tuning Indicator, W G Morley, The Radio Constructor, March & April, 1969:
https://www.r-type.org/articles/art-137.htm