File:Middletown milling machine 1818--001.png

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Middletown_milling_machine_1818--001.png ‎(690 × 195 pixels, file size: 25 KB, MIME type: image/png)

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current23:14, 13 July 2010Thumbnail for version as of 23:14, 13 July 2010690 × 195 (25 KB)commons>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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