ETL GC12/4B

The GC12/4B is a neon-filled counting tube manufactured by ETL in Great Britain. It is capable of bi-directional operation at up to 4,000 counts per second. It features twelve stable cathodes, unlike the usual ten found in most Dekatrons, which allowed it to be used for base-12 counting. Four of these cathodes are accessible via output pins, enabling them to trigger actions such as advancing…