File:Babbage sign language.jpg
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| Description |
English: w:Charles Babbage, description of a sign language for mechanical components. From On a method of expressing by signs the action of machinery (1827), |
| Date | |
| Source | https://archive.org/stream/philtrans09445034/09445034#page/n3/mode/2up |
| Author | Charles Babbage |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:56, 25 April 2013 | | 384 × 451 (77 KB) | Charles Matthews | {{Information |Description ={{en|1=w:Charles Babbage, description of a sign language for mechanical components.}} |Source =http://archive.org/stream/philtrans09445034/09445034#page/n3/mode/2up |Author =Charles Babbage |Date ... |
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