File:AmCyc Boring - Diamond Drill.jpg
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| Description |
English: Woodcut/drawing of a diamond drill, owned by the American diamond drill company, the bit of which is the invention of Rodolphe Leschot of Paris. It is a rotary machine. There are several patterns and sizes; that represented is a small tunnelling drill. |
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| Date | published 1879 | ||||||
| Source | The American Cyclopædia, v. 3, 1879, p. 101 (Fig. 21). | ||||||
| Author | Unknown author | ||||||
| Permission (Reusing this file) |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:12, 25 March 2014 | | 729 × 726 (170 KB) | Library Guy | {{Information |Description ={{en|1=Woodcut/drawing of a diamond drill, owned by the American diamond drill company, the bit of which is the invention of Rodolphe Leschot of Paris. It is a rotary machine. There are several patterns and sizes; that re... |
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