File:7AK7 vacuum tubes.jpg
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![File:7AK7 vacuum tubes.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/55/7AK7_vacuum_tubes.jpg/450px-7AK7_vacuum_tubes.jpg)
Size of this preview: 450 × 600 pixels. Other resolutions: 180 × 240 pixels | 360 × 480 pixels | 576 × 768 pixels | 768 × 1,024 pixels | 2,448 × 3,264 pixels.
Original file (2,448 × 3,264 pixels, file size: 2.17 MB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:12, 18 July 2019 | ![]() | 2,448 × 3,264 (2.17 MB) | commons>Diomidis Spinellis | User created page with UploadWizard |
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