File:Dual-beam Cathode Ray Oscillograph, DuMont Laboratories, c. 1950s - National Electronics Museum - DSC00101 (cropped).JPG
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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) | Pittigrilli | removed background, cropped, corrected perspective | |
12:04, 27 April 2021 | 2,788 × 3,793 (4.38 MB) | Pittigrilli | File:Dual-beam Cathode Ray Oscillograph, DuMont Laboratories, c. 1950s - National Electronics Museum - DSC00101.JPG cropped 22 % horizontally, 15 % vertically using CropTool with precise mode. |
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