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Roberts Correct called FLV,s, as used in old calculators, high tension but not individual numbers as in Nixie tubes. Just segments are lit, not whole individual Numbers, still looks like a good kit to play with. Built a real Nixie tube clock that i built a long time ago, say 40 yeas ago. When they still were produced, and i still have it, a wonderful glow! Still purchasing this to see the difference.

tobos 2019-12-11 15:54:39
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