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- Polygraph_(duplicating_device) abstract "A Polygraph is a device that produces a copy of a piece of writing simultaneously with the creation of the original, using pens and ink.Patented by John Isaac Hawkins on May 17, 1803, it was most famously used by the third U.S. president, Thomas Jefferson, who acquired his first polygraph in 1804 and later suggested improvements to Charles Willson Peale, owner of the American rights. Because Jefferson was a prolific letter writer, the preservation of his copies have offered historians extensive insights into Jefferson's viewpoints and actions.Jefferson called the polygraph \"the finest invention of the present age\". A description of Jefferson's office routine in his own words may be read here.Another American, Benjamin Henry Latrobe was the first customer of Peale's and not only introduced the device to Jefferson but was also instrumental in its improvement.The quality of the copy made by a machine in good condition is so fine that it is considered by some that only characteristics other than the quality of the script (e.g., having been mailed, etc.) are reliable indicators (under the assumption that the original was mailed and not the copy), although a worn or maladjusted machine will produce specific indications in the copy.Mechanisms of this type are more generally known as pantographs, which include simple devices for making copies at various enlargements or reductions by tracing over a drawing.".
- Polygraph_(duplicating_device) thumbnail JeffersonPolygraphReproductionFrontView.jpg?width=300.
- Polygraph_(duplicating_device) wikiPageExternalLink vc59.1.jpg.
- Polygraph_(duplicating_device) wikiPageExternalLink TJ.html.
- Polygraph_(duplicating_device) wikiPageExternalLink 2216029.
- Polygraph_(duplicating_device) wikiPageExternalLink Polygraph.
- Polygraph_(duplicating_device) wikiPageExternalLink monticellos-makeover.
- Polygraph_(duplicating_device) wikiPageExternalLink jeflxx.htm.
- Polygraph_(duplicating_device) wikiPageExternalLink 8griffin_room.html.
- Polygraph_(duplicating_device) wikiPageExternalLink home.html.
- Polygraph_(duplicating_device) wikiPageExternalLink polygraph.html.
- Polygraph_(duplicating_device) wikiPageID "24877113".
- Polygraph_(duplicating_device) wikiPageLength "10593".
- Polygraph_(duplicating_device) wikiPageOutDegree "16".
- Polygraph_(duplicating_device) wikiPageRevisionID "696448652".
- Polygraph_(duplicating_device) wikiPageWikiLink Benjamin_Henry_Latrobe.
- Polygraph_(duplicating_device) wikiPageWikiLink Category:Printing.
- Polygraph_(duplicating_device) wikiPageWikiLink Category:Technical_drawing.
- Polygraph_(duplicating_device) wikiPageWikiLink Charles_Willson_Peale.
- Polygraph_(duplicating_device) wikiPageWikiLink Degrees_of_freedom_(mechanics).
- Polygraph_(duplicating_device) wikiPageWikiLink John_Isaac_Hawkins.
- Polygraph_(duplicating_device) wikiPageWikiLink LongPen.
- Polygraph_(duplicating_device) wikiPageWikiLink Monticello.
- Polygraph_(duplicating_device) wikiPageWikiLink National_Museum_of_American_History.
- Polygraph_(duplicating_device) wikiPageWikiLink Pantograph.
- Polygraph_(duplicating_device) wikiPageWikiLink Parallelogram.
- Polygraph_(duplicating_device) wikiPageWikiLink Telautograph.
- Polygraph_(duplicating_device) wikiPageWikiLink Thomas_Jefferson.
- Polygraph_(duplicating_device) wikiPageWikiLink File:1804_Jeffersons-Polygraph-Monticello_Cville_VA.jpg.
- Polygraph_(duplicating_device) wikiPageWikiLink File:JeffersonPolygraphReproductionFrontView.jpg.
- Polygraph_(duplicating_device) wikiPageWikiLink File:Reess_Cyclopaedia_Polygraph.png.
- Polygraph_(duplicating_device) wikiPageWikiLinkText "Polygraph (duplicating device)".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "Polygraph".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "Polygraphs".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "invention with the same name".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "polygraph (duplicating device)".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "polygraph".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "polygraphed".
- Polygraph_(duplicating_device) wikiPageWikiLinkText "polygraphs".
- Polygraph_(duplicating_device) wikiPageUsesTemplate Template:Expand_section.
- Polygraph_(duplicating_device) wikiPageUsesTemplate Template:Other_uses.
- Polygraph_(duplicating_device) wikiPageUsesTemplate Template:Reflist.
- Polygraph_(duplicating_device) wikiPageUsesTemplate Template:Use_mdy_dates.
- Polygraph_(duplicating_device) subject Category:Printing.
- Polygraph_(duplicating_device) subject Category:Technical_drawing.
- Polygraph_(duplicating_device) hypernym Device.
- Polygraph_(duplicating_device) type Device.
- Polygraph_(duplicating_device) type Infographic.
- Polygraph_(duplicating_device) type Occupation.
- Polygraph_(duplicating_device) comment "A Polygraph is a device that produces a copy of a piece of writing simultaneously with the creation of the original, using pens and ink.Patented by John Isaac Hawkins on May 17, 1803, it was most famously used by the third U.S. president, Thomas Jefferson, who acquired his first polygraph in 1804 and later suggested improvements to Charles Willson Peale, owner of the American rights.".
- Polygraph_(duplicating_device) label "Polygraph (duplicating device)".
- Polygraph_(duplicating_device) sameAs Q1686381.
- Polygraph_(duplicating_device) sameAs Jefferson-Polygraph.
- Polygraph_(duplicating_device) sameAs Poligrafo_di_Jefferson.
- Polygraph_(duplicating_device) sameAs m.09gn4lw.
- Polygraph_(duplicating_device) sameAs Q1686381.
- Polygraph_(duplicating_device) wasDerivedFrom Polygraph_(duplicating_device)?oldid=696448652.
- Polygraph_(duplicating_device) depiction JeffersonPolygraphReproductionFrontView.jpg.
- Polygraph_(duplicating_device) isPrimaryTopicOf Polygraph_(duplicating_device).