File:Dual-beam Cathode Ray Oscillograph, DuMont Laboratories, c. 1950s - National Electronics Museum - DSC00101 (cropped).JPG
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Size of this preview: 437 × 599 pixels. Other resolutions: 175 × 240 pixels | 350 × 480 pixels | 560 × 768 pixels | 747 × 1,024 pixels | 1,494 × 2,048 pixels | 2,700 × 3,700 pixels.
Original file (2,700 × 3,700 pixels, file size: 2.77 MB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:23, 28 December 2022 | 2,700 × 3,700 (2.77 MB) | commons>Pittigrilli | removed background, cropped, corrected perspective |
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