On Jan 3, 6:53*pm, tony sayer wrote:
Enjoy....

http://dailymotion.alice.it/video/x3...ne-lampe-triod...
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A long time ago I used to work for GEC. it was said that when they
stopped making valves they turned the factory over to making very
expensive wine glasses becuase it could make use of the same highly
skilled workforce and much of the equipment.

Robert