ꯐꯥꯏꯜ:Middletown milling machine 1818--001.png
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:44, 14 July 2010 | Error creating thumbnail: File missing | ৬৯০ × ১৯৫ (২৫ KB) | smartcommons>Three-quarter-ten | {{Information |Description=Line drawing of a milling machine in use in a firearms factory in Middletown, Connecticut, USA, by 1818. It was described by E.G. Parkhurst, who had seen it in 1851 and gathered information about it then from Robert Johnson, who |
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