File:NixieFrequencyCounter.jpg
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NixieFrequencyCounter.jpg (460 × 181 pixels, file size: 36 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:59, 24 June 2005 | ![]() | 460 × 181 (36 KB) | commons>Julo | Systron-Donner frequency counter from 1973 with Nixie display - photo by E. Barbour {{PD}} |
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