Tubes / semiconductors by category - Manufacturer
Selected: Northern Engineering Laboratories Inc: Burlington, Wisconsin
| Name | Maker | Year | User | Usage | Type | Base |  |
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 |
 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T-12A | Northern E | Technology | Quartz C | Octal ( | – | 3 | – | – | – | – | – | |||
| T-90-100KC | Northern E | Technology | Quartz C | Octal ( | – | 2 | – | – | 1 | 1 | – | |||
2 tubes or semiconductors found.