Piston_ring_illustrated.png (553 × 592 pixels, file size: 246 KB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:28, 29 May 2011 | 553 × 592 (246 KB) | John Chamberlain | "The Steam engine and gas and oil engines" by John Perry. 1899. Copyright expired. |
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