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 . . . . Christoph Zunkel,  Leipzig, 1774 (first edition 1727). The best illustrated book on calculation and measurement published during the eighteenth century.PPPP* abbpcllebooks.library.cornell.edu/m/math/browse/title/a.phpPPPPxxxCornell University Library Historical Math Monographs. A wonderful collection of early mathematics books generally able to be read on line.PPPP* abbpcllwww.bibnum.education.fr/recherabbpcllmeta-studies.net/pmwiki/uploads/Books/TheatrumArithmeticoGeometricum.pdfPPPPxxxTheatrum Arithmetico-Geometricum das ist: Schau-Platz der Rechen- und Mess-Kunst. . . . Christoph Zunkel,  Leipzig, 1774 (first edition 1727). The best illustrated book on calculation and measurement published during the eighteenth century.PPPP* abbpcllebooks.library.cornell.edu/m/math/browse/title/a.phpPPPPxxxCornell University Library Historical Math Monographs. A wonderful collection of early mathematics books generally able to be read on line.PPPP* abbpcllwww.bibnum.education.fr/recherche/resultat/liste/PPPPxxxBibnum Classic scientific articles from before 1940 relevant to calculation, mathematics, and information science. Includes original documents from Pascale and Leibniz.PPPPPPVV Key websitesPPPPVV Survey websitesPPPP* abbpcllwww.rechnerlexikon.de/en/artikel/Main_PagePPPPxxxRechnerlexicon The leading and most comprehensive survey site for calculator specialists and collectors with information about almost every known mechanical calculator and a database of more than 23750 patents.PPPP* abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxRechenmaschinen-Illustrated: The most comprehensive listing of details about early calculating machines on the web. Based around the classic study Ernst Martin, '/Die Rechenmaschinen/', 1925, and translated into English as abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxErnst Martin, "The Calculating Machines", MIT Press and The Charles Babbage Institute, USA, "History of Computing"  series, 1992.PP PP* abbpcllwww.histoire-informatique.org/idx/PPPPxxxHistoire de l'Informatique Wide-ranging gallery of calculators and associated information. [in French] PPPP* abbpcllwww.rechenkasten.de/BueromaschinenLexikon/index.htmlPPPPxxxBüromaschinen Lexikon Published by Goeller-Verlag  the annual office machines dictionary provided a comprehensive illustrated overview of common office equipment for the respective years. This site provides collectors with the information on calculators from that website.[in German]PPPP* abbpcllhome.vicnet.net.au/~wolff/calculators/PPPPxxxJohn Wolff's Web Museum Calculating Machines A wonderfully detailed site by an expert collector with great mechanical insight into the workings of the extensive set of calculators listed.PPPP* abbpcllw1.131.telia.com/~u13101111/typewriters.htmlPPPPxxxSwedish Typewriters Site - listing of antique office calculators From the home page select the "The Collection" in the navigation bar on the left, and then scroll down to the RäKNEMASKINER / CALCULATORS section.PPPP* abbpcllwww.ph-ludwigsburg.de/fileadmin/subsites/2e-imix-t-01/user_files/mmm/mmm_online/PPPPxxxMathematisches Maschinenemuseum Good historical summaries and a nice set of videos of machines in action.PPPP*abbpcllwww.mechrech.infoPPPPxxxBeiträge zur Geschichte des mechanischen Rechnens: Contributions to the History of Mechanical Calculation Good list of publications, books and historical articles dealing in particular with the history and internal workings of calculating machines. PPPP* abbpclled-thelen.org/comp-hist/on-line-docs.htmlPPPPxxxOnline documents A broad listing of useful links to documents covering the history of calculators.PPPP* abbpcllcalcollect.free.fr/machines/macha.htmPPPPxxxMichel Bardel's list Tentative list of all existing mechanical machines since 1820, together with FAQs and serial numbers. An invaluable reference source.PPPP* abbpcllwww.thocp.net/timeline/1620.htmPPPPxxxHistory of Computer AntiquityPPPP* abbpcllbluemich.net/rechner/PPPPxxxMechanische Rechenhilfsmittel Mechanical Calculating Devices by Wolf G. Blümich (in German.)PPPP* abbpcllwww.madeasy.de/2/mathe.htmPPPPxxxMathematics site by Reiner Hoffmann in German.PPPP* abbpcllwww.opticaliamuseum.com/drawing/PPPPxxxOpticalia Museum - museum menu is working, but the catalogue menu was still under construction in May 2012.PPPP* abbpcllwww.mipaginapersonal.movistar.es/web3/calculating/LLIBRE%20JPG/INDEX%20SOLO.htm#alfaPPPPxxxÍndice de las Máquinas de Calcular a comprehensive survey site by Josep Balsach Peig, in Spanish.PPPP* abbpcllcalmeca.free.fr/calculmecanique_php/index_calmeca.php?lang=engPPPPxxxFrançois Babillot's calculator website PPPPPPVV Manuals and InstructionsPPPP* abbpcllwww.rechenwerkzeug.de/default.htmPPPPxxxCalculator Manuals from Rechenwerkzeug.dePPPP* abbpcllwww.nicolamarras.it/calcolatoria/downloads_en.htmlPPPPxxxCalcolatoria downloadsPPPP* abbpcllwww.mathsinstruments.me.uk/page62.htmlPPPPxxxMathematical Instruments Catalogues and BrochuresPPPP* abbpcllwww.prehistoriadelainformatica.com/manuales-instructions/PPPPxxxPrehistoria de la Informatica Office CollectiblesPPPP* abbpcllusers.lewiston.com/ejorgens/office/miscellaneous/miscellaneous.htmlPPPPxxxMiscellaneous Manuals Pay site, but if you can't get these elsewhere...PPPP* abbpcllofficemachinemanuals.com/catalog/miscellaneous.htmPPPPxxxOffice Machines America Pay site.PPPP* abbpcllwww.mechanicalculator.com/manuals/PPPPxxxCollection of Kees Nagtegaal useful set of manuals for slide rules and the more common calculators.PPPP* abbpcllabbpcllwww.mccoys-kecatalogs.com/KEManuals/manuals.htmPPPPxxxKeuffel & Esser Slide Rule Manuals and Catalogues site by Clark McCoy.PPPPPPVV Specialist websitesPPPP* abbpcllwww.arithmometre.orgPPPPxxxValéry Monnier's extraordinary and expert website on the Thomas de Colmar ArithmometerPPPP* abbpcllwww.ami19.org/Arithmetic MachinesPPPPxxxArithmetical Machines & Instruments / 19th century Valéry Monnier's other set of images and details of some of the most rare and precious calculating machines of the C19 (in French and English). PPPP* abbpcllmortati.com/glusker/elecmech/refslinks.htmPPPPxxxElectromechanical calculating machines from the 1960's includes extensive lists of other relevant links and books.PPPP* abbpcllajmdeman.awardspace.info/PPPPxxxOriginal documents on the History of CalculatorsPPPP* abbpcllwww.yvesserra.fr/PPPPxxxLe cabinet de curiosités d'Yves Serra  A nice presentation of information on early calculators (with particular attention to those of Pascale and Leibnitz).PPPP* abbpcllwww2.cruzio.com/~vagabond/ComptHome.htmlPPPPxxxComptometer Website Very authoritative website on the Felt & Tarrant Comptometer.PPPP* abbpcllwww.vcalc.net/PPPPxxxThe Calculator Reference Comprehensive coverage of abbpcllwww.vcalc.net/cu.htmPPPPxxxCurta, abbpcllwww.vcalc.net/hp.htmPPPPxxxHewlett Packard, and abbpcllwww.vcalc.net/ti.htmPPPPxxxTexas Instrument calculators.  Includes links to other sites and manuals.PPPP* abbpcllhome.comcast.net/~wtodhner/calcs.htmlPPPPxxxWilliam Ohdner's site commemorating the Ohdner calculatorPPPP* abbpcllwww.xnumber.com/xnumber/cmisc_facit_page.htmPPPPxxxFacit Page by James Redin including a comprehensive list of models of the Facit calculators.PPPP* abbpcllwww.xnumber.com/xnumber/facit_history.htmPPPPxxxHistory of the Facit Calculator by Christofer Nöring PPPP* abbpcllwww.taswegian.com/MOSCOW/soviet.htmlPPPPxxxMuseum of Soviet CalculatorsPPPP* abbpcllrk86.com/frolov/calcolle.htmPPPPxxxSoviet Calculators CollectionPPPP* abbpcllofficemachinemanuals.com/PPPPxxxOffice Machines Americana including a useful set of manuals.PPPP* abbpcllwww.calculators.de/PPPPxxxMuseum of Pocket Calculating Devices mainly focussing on electronic pocket calculators.PPPP* https://plus.google.com/photos/103618537816338035609/albums?banner=pwaPPPPxxxJohn Huey's Picasawebalbum with illustrations of a wide range of Addiator Troncet calculators.PPPPPPVV Gunter Scales & SectorsPPPP* abbpcllwww.rainerstumpe.de/HTML/erl01.htmlPPPPxxxGunter Works All about Gunter Scales and Sectors and how to use them (mostly in German but also in part in English)PPPPVV Slide RulesPPPP* abbpcllsliderulemuseum.com/PPPPxxxInternational Slide Rule MuseumPPPP* abbpcllsliderulemuseum.com/HSRC_Menu.htmPPPPxxxHerman van Herwijnen's Slide Rule Catalogue "LITE"PPPP* abbpcllwww.hh.schule.de/metalltechnik-didaktik/museum/rechenschieber/scheiben/rs9.htmPPPPxxxRechenscheiber im Online-MuseumPPPP* abbpcllwww.sliderule.ca/PPPPxxxEric's Slide Rule SitePPPP* abbpcllsliderule.ozmanor.com/index.htmlPPPPxxxGreg's slide rulesPPPP* abbpcllwww.sliderules.infoPPPPxxxRobert Manley's Slide Rule SitePPPP* abbpcllbluemich.net/rechner/rma21.htm#14PPPPxxxAnhang 2.1: Bedienungs- und Serviceanleitungen für Tabellen, Rechenschieber, -scheiben, -walzen und -skalen Instructions for many slide rules.PPPP* abbpclloughtred.org/PPPPxxxThe Oughtred SocietyPPPP* abbpcllsliderules.lovett.com/cookiedev/extendedlitsearch.htmlPPPPxxxScanned back issues of the Oughtred Society Journal and other publications An essential reference site for enthusiasts.  Access to the last five years publications requires a password and username to be provided by the Society.PPPP*abbpcllwww.rekeninstrumenten.nl/index.htmlPPPPxxxDutch Circle for Historical Calculating InstrumentsPPPP* abbpcllwww.hpmuseum.org/sliderul.htmPPPPxxxMuseum of HP Calculators History of Slide RulesPPPP* abbpcllwww.xnumber.com/xnumber/hp.htmPPPPxxxThe Death of the Slide Rule by James RedinPPPP* abbpcllwww.sliderule.it/PPPPxxxCollection of Giovanni BredaPPPP* abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxInternational Slide Rule Museum A survey site focussing primarily on slide rules with a wealth of links and other material including other related sites, and manuals and related material.  See also its helpful and comprehensive abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxlinks page.PPPP* abbpcllwww.svpal.org/~dickel/OK/OtisKing.htmlPPPPxxxOtis King's Patent Calculator Specialist site focussing on the Otis King cylindrical sliderule.PPPP* abbpclllinealis.org/PPPPxxxlinealis.org "Un site consacré aux instruments du calcul manuel tels que les règles et cercles à calcul, les curseurs, abaques, machines à calculer tenant dans la main, planimètres et intégrateurs."  PPPP* abbpcllwww.sphere.bc.ca/test/2archives.htmlPPPPThe Slide Rule Universe by Sphere research corporation.PPPPPPPPfarsome nasty examples of mediaeval torture chambers and dogs and cats and elephants and broils and gorgeous animals of all sorts measuring instruments of all sortsPPPPPPPPPPPPPPPPPP

 abbpcllmeta-studies.net/pmwiki/uploads/Books/TheatrumArithmeticoGeometricum.pdfPPPPxxxTheatrum Arithmetico-Geometricum das ist: Schau-Platz der Rechen- und Mess-Kunst. . . . Christoph Zunkel,  Leipzig, 1774 (first edition 1727). The best illustrated book on calculation and measurement published during the eighteenth century.PPPP* abbpcllebooks.library.cornell.edu/m/math/browse/title/a.phpPPPPxxxCornell University Library Historical Math Monographs. A wonderful collection of early mathematics books generally able to be read on line.PPPP* abbpcllwww.bibnum.education.fr/recherabbpcllmeta-studies.net/pmwiki/uploads/Books/TheatrumArithmeticoGeometricum.pdfPPPPxxxTheatrum Arithmetico-Geometricum das ist: Schau-Platz der Rechen- und Mess-Kunst. . . . Christoph Zunkel,  Leipzig, 1774 (first edition 1727). The best illustrated book on calculation and measurement published during the eighteenth century.PPPP* abbpcllebooks.library.cornell.edu/m/math/browse/title/a.phpPPPPxxxCornell University Library Historical Math Monographs. A wonderful collection of early mathematics books generally able to be read on line.PPPP* abbpcllwww.bibnum.education.fr/recherche/resultat/liste/PPPPxxxBibnum Classic scientific articles from before 1940 relevant to calculation, mathematics, and information science. Includes original documents from Pascale and Leibniz.PPPPPPVV Key websitesPPPPVV Survey websitesPPPP* abbpcllwww.rechnerlexikon.de/en/artikel/Main_PagePPPPxxxRechnerlexicon The leading and most comprehensive survey site for calculator specialists and collectors with information about almost every known mechanical calculator and a database of more than 23750 patents.PPPP* abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxRechenmaschinen-Illustrated: The most comprehensive listing of details about early calculating machines on the web. Based around the classic study Ernst Martin, '/Die Rechenmaschinen/', 1925, and translated into English as abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxErnst Martin, "The Calculating Machines", MIT Press and The Charles Babbage Institute, USA, "History of Computing"  series, 1992.PP PP* abbpcllwww.histoire-informatique.org/idx/PPPPxxxHistoire de l'Informatique Wide-ranging gallery of calculators and associated information. [in French] PPPP* abbpcllwww.rechenkasten.de/BueromaschinenLexikon/index.htmlPPPPxxxBüromaschinen Lexikon Published by Goeller-Verlag  the annual office machines dictionary provided a comprehensive illustrated overview of common office equipment for the respective years. This site provides collectors with the information on calculators from that website.[in German]PPPP* abbpcllhome.vicnet.net.au/~wolff/calculators/PPPPxxxJohn Wolff's Web Museum Calculating Machines A wonderfully detailed site by an expert collector with great mechanical insight into the workings of the extensive set of calculators listed.PPPP* abbpcllw1.131.telia.com/~u13101111/typewriters.htmlPPPPxxxSwedish Typewriters Site - listing of antique office calculators From the home page select the "The Collection" in the navigation bar on the left, and then scroll down to the RäKNEMASKINER / CALCULATORS section.PPPP* abbpcllwww.ph-ludwigsburg.de/fileadmin/subsites/2e-imix-t-01/user_files/mmm/mmm_online/PPPPxxxMathematisches Maschinenemuseum Good historical summaries and a nice set of videos of machines in action.PPPP*abbpcllwww.mechrech.infoPPPPxxxBeiträge zur Geschichte des mechanischen Rechnens: Contributions to the History of Mechanical Calculation Good list of publications, books and historical articles dealing in particular with the history and internal workings of calculating machines. PPPP* abbpclled-thelen.org/comp-hist/on-line-docs.htmlPPPPxxxOnline documents A broad listing of useful links to documents covering the history of calculators.PPPP* abbpcllcalcollect.free.fr/machines/macha.htmPPPPxxxMichel Bardel's list Tentative list of all existing mechanical machines since 1820, together with FAQs and serial numbers. An invaluable reference source.PPPP* abbpcllwww.thocp.net/timeline/1620.htmPPPPxxxHistory of Computer AntiquityPPPP* abbpcllbluemich.net/rechner/PPPPxxxMechanische Rechenhilfsmittel Mechanical Calculating Devices by Wolf G. Blümich (in German.)PPPP* abbpcllwww.madeasy.de/2/mathe.htmPPPPxxxMathematics site by Reiner Hoffmann in German.PPPP* abbpcllwww.opticaliamuseum.com/drawing/PPPPxxxOpticalia Museum - museum menu is working, but the catalogue menu was still under construction in May 2012.PPPP* abbpcllwww.mipaginapersonal.movistar.es/web3/calculating/LLIBRE%20JPG/INDEX%20SOLO.htm#alfaPPPPxxxÍndice de las Máquinas de Calcular a comprehensive survey site by Josep Balsach Peig, in Spanish.PPPP* abbpcllcalmeca.free.fr/calculmecanique_php/index_calmeca.php?lang=engPPPPxxxFrançois Babillot's calculator website PPPPPPVV Manuals and InstructionsPPPP* abbpcllwww.rechenwerkzeug.de/default.htmPPPPxxxCalculator Manuals from Rechenwerkzeug.dePPPP* abbpcllwww.nicolamarras.it/calcolatoria/downloads_en.htmlPPPPxxxCalcolatoria downloadsPPPP* abbpcllwww.mathsinstruments.me.uk/page62.htmlPPPPxxxMathematical Instruments Catalogues and BrochuresPPPP* abbpcllwww.prehistoriadelainformatica.com/manuales-instructions/PPPPxxxPrehistoria de la Informatica Office CollectiblesPPPP* abbpcllusers.lewiston.com/ejorgens/office/miscellaneous/miscellaneous.htmlPPPPxxxMiscellaneous Manuals Pay site, but if you can't get these elsewhere...PPPP* abbpcllofficemachinemanuals.com/catalog/miscellaneous.htmPPPPxxxOffice Machines America Pay site.PPPP* abbpcllwww.mechanicalculator.com/manuals/PPPPxxxCollection of Kees Nagtegaal useful set of manuals for slide rules and the more common calculators.PPPP* abbpcllabbpcllwww.mccoys-kecatalogs.com/KEManuals/manuals.htmPPPPxxxKeuffel & Esser Slide Rule Manuals and Catalogues site by Clark McCoy.PPPPPPVV Specialist websitesPPPP* abbpcllwww.arithmometre.orgPPPPxxxValéry Monnier's extraordinary and expert website on the Thomas de Colmar ArithmometerPPPP* abbpcllwww.ami19.org/Arithmetic MachinesPPPPxxxArithmetical Machines & Instruments / 19th century Valéry Monnier's other set of images and details of some of the most rare and precious calculating machines of the C19 (in French and English). PPPP* abbpcllmortati.com/glusker/elecmech/refslinks.htmPPPPxxxElectromechanical calculating machines from the 1960's includes extensive lists of other relevant links and books.PPPP* abbpcllajmdeman.awardspace.info/PPPPxxxOriginal documents on the History of CalculatorsPPPP* abbpcllwww.yvesserra.fr/PPPPxxxLe cabinet de curiosités d'Yves Serra  A nice presentation of information on early calculators (with particular attention to those of Pascale and Leibnitz).PPPP* abbpcllwww2.cruzio.com/~vagabond/ComptHome.htmlPPPPxxxComptometer Website Very authoritative website on the Felt & Tarrant Comptometer.PPPP* abbpcllwww.vcalc.net/PPPPxxxThe Calculator Reference Comprehensive coverage of abbpcllwww.vcalc.net/cu.htmPPPPxxxCurta, abbpcllwww.vcalc.net/hp.htmPPPPxxxHewlett Packard, and abbpcllwww.vcalc.net/ti.htmPPPPxxxTexas Instrument calculators.  Includes links to other sites and manuals.PPPP* abbpcllhome.comcast.net/~wtodhner/calcs.htmlPPPPxxxWilliam Ohdner's site commemorating the Ohdner calculatorPPPP* abbpcllwww.xnumber.com/xnumber/cmisc_facit_page.htmPPPPxxxFacit Page by James Redin including a comprehensive list of models of the Facit calculators.PPPP* abbpcllwww.xnumber.com/xnumber/facit_history.htmPPPPxxxHistory of the Facit Calculator by Christofer Nöring PPPP* abbpcllwww.taswegian.com/MOSCOW/soviet.htmlPPPPxxxMuseum of Soviet CalculatorsPPPP* abbpcllrk86.com/frolov/calcolle.htmPPPPxxxSoviet Calculators CollectionPPPP* abbpcllofficemachinemanuals.com/PPPPxxxOffice Machines Americana including a useful set of manuals.PPPP* abbpcllwww.calculators.de/PPPPxxxMuseum of Pocket Calculating Devices mainly focussing on electronic pocket calculators.PPPP* https://plus.google.com/photos/103618537816338035609/albums?banner=pwaPPPPxxxJohn Huey's Picasawebalbum with illustrations of a wide range of Addiator Troncet calculators.PPPPPPVV Gunter Scales & SectorsPPPP* abbpcllwww.rainerstumpe.de/HTML/erl01.htmlPPPPxxxGunter Works All about Gunter Scales and Sectors and how to use them (mostly in German but also in part in English)PPPPVV Slide RulesPPPP* abbpcllsliderulemuseum.com/PPPPxxxInternational Slide Rule MuseumPPPP* abbpcllsliderulemuseum.com/HSRC_Menu.htmPPPPxxxHerman van Herwijnen's Slide Rule Catalogue "LITE"PPPP* abbpcllwww.hh.schule.de/metalltechnik-didaktik/museum/rechenschieber/scheiben/rs9.htmPPPPxxxRechenscheiber im Online-MuseumPPPP* abbpcllwww.sliderule.ca/PPPPxxxEric's Slide Rule SitePPPP* abbpcllsliderule.ozmanor.com/index.htmlPPPPxxxGreg's slide rulesPPPP* abbpcllwww.sliderules.infoPPPPxxxRobert Manley's Slide Rule SitePPPP* abbpcllbluemich.net/rechner/rma21.htm#14PPPPxxxAnhang 2.1: Bedienungs- und Serviceanleitungen für Tabellen, Rechenschieber, -scheiben, -walzen und -skalen Instructions for many slide rules.PPPP* abbpclloughtred.org/PPPPxxxThe Oughtred SocietyPPPP* abbpcllsliderules.lovett.com/cookiedev/extendedlitsearch.htmlPPPPxxxScanned back issues of the Oughtred Society Journal and other publications An essential reference site for enthusiasts.  Access to the last five years publications requires a password and username to be provided by the Society.PPPP*abbpcllwww.rekeninstrumenten.nl/index.htmlPPPPxxxDutch Circle for Historical Calculating InstrumentsPPPP* abbpcllwww.hpmuseum.org/sliderul.htmPPPPxxxMuseum of HP Calculators History of Slide RulesPPPP* abbpcllwww.xnumber.com/xnumber/hp.htmPPPPxxxThe Death of the Slide Rule by James RedinPPPP* abbpcllwww.sliderule.it/PPPPxxxCollection of Giovanni BredaPPPP* abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxInternational Slide Rule Museum A survey site focussing primarily on slide rules with a wealth of links and other material including other related sites, and manuals and related material.  See also its helpful and comprehensive abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxlinks page.PPPP* abbpcllwww.svpal.org/~dickel/OK/OtisKing.htmlPPPPxxxOtis King's Patent Calculator Specialist site focussing on the Otis King cylindrical sliderule.PPPP* abbpclllinealis.org/PPPPxxxlinealis.org "Un site consacré aux instruments du calcul manuel tels que les règles et cercles à calcul, les curseurs, abaques, machines à calculer tenant dans la main, planimètres et intégrateurs."  PPPP* abbpcllwww.sphere.bc.ca/test/2archives.htmlPPPPThe Slide Rule Universe by Sphere research corporation.PPPPPPPPfarsome nasty examples of mediaeval torture chambers and dogs and cats and elephants and broils and gorgeous animals of all sorts measuring instruments of all sortsPPPPPPPPPPPPPPPPPP

bbpcllwww.bibnum.education.fr/calculinformatique/calcul/la-pascaline-la-«%C2%A0machine-qui-relève-du-défaut-de-la-mémoire%C2%A0»PPPPxxx"Lettre dédicatoire à Monseigneur le Chancelier sur le sujet de la machine nouvellement inventée par le Sieur B.P. pour faire toutes sortes d'opérations d'arithmétique, par un mouvement reglé, sans plume ny jettons avec un advis necessaire à ceux qui auront curiosité de voir ladite machine, & de s'en servir", 1645.PPPP* Jacob Leupold, abbpcllmeta-studies.net/pmwiki/uploads/Books/TheatrumArithmeticoGeometricum.pdfPPPPxxxTheatrum Arithmetico-Geometricum das ist: Schau-Platz der Rechen- und Mess-Kunst. . . . Christoph Zunkel,  Leipzig, 1774 (first edition 1727). The best illustrated book on calculation and measurement published during the eighteenth century.PPPP* abbpcllebooks.library.cornell.edu/m/math/browse/title/a.phpPPPPxxxCornell University Library Historical Math Monographs. A wonderful collection of early mathematics books generally able to be read on line.PPPP* abbpcllwww.bibnum.education.fr/recherche/resultat/liste/PPPPxxxBibnum Classic scientific articles from before 1940 relevant to calculation, mathematics, and information science. Includes original documents from Pascale and Leibniz.PPPPPPVV Key websitesPPPPVV Survey websitesPPPP* abbpcllwww.rechnerlexikon.de/en/artikel/Main_PagePPPPxxxRechnerlexicon The leading and most comprehensive survey site for calculator specialists and collectors with information about almost every known mechanical calculator and a database of more than 23750 patents.PPPP* abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxRechenmaschinen-Illustrated: The most comprehensive listing of details about early calculating machines on the web. Based around the classic study Ernst Martin, '/Die Rechenmaschinen/', 1925, and translated into English as abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxErnst Martin, "The Calculating Machines", MIT Press and The Charles Babbage Institute, USA, "History of Computing"  series, 1992.PP PP* abbpcllwww.histoire-informatique.org/idx/PPPPxxxHistoire de l'Informatique Wide-ranging gallery of calculators and associated information. [in French] PPPP* abbpcllwww.rechenkasten.de/BueromaschinenLexikon/index.htmlPPPPxxxBüromaschinen Lexikon Published by Goeller-Verlag  the annual office machines dictionary provided a comprehensive illustrated overview of common office equipment for the respective years. This site provides collectors with the information on calculators from that website.[in German]PPPP* abbpcllhome.vicnet.net.au/~wolff/calculators/PPPPxxxJohn Wolff's Web Museum Calculating Machines A wonderfully detailed site by an expert collector with great mechanical insight into the workings of the extensive set of calculators listed.PPPP* abbpcllw1.131.telia.com/~u13101111/typewriters.htmlPPPPxxxSwedish Typewriters Site - listing of antique office calculators From the home page select the "The Collection" in the navigation bar on the left, and then scroll down to the RäKNEMASKINER / CALCULATORS section.PPPP* abbpcllwww.ph-ludwigsburg.de/fileadmin/subsites/2e-imix-t-01/user_files/mmm/mmm_online/PPPPxxxMathematisches Maschinenemuseum Good historical summaries and a nice set of videos of machines in action.PPPP*abbpcllwww.mechrech.infoPPPPxxxBeiträge zur Geschichte des mechanischen Rechnens: Contributions to the History of Mechanical Calculation Good list of publications, books and historical articles dealing in particular with the history and internal workings of calculating machines. PPPP* abbpclled-thelen.org/comp-hist/on-line-docs.htmlPPPPxxxOnline documents A broad listing of useful links to documents covering the history of calculators.PPPP* abbpcllcalcollect.free.fr/machines/macha.htmPPPPxxxMichel Bardel's list Tentative list of all existing mechanical machines since 1820, together with FAQs and serial numbers. An invaluable reference source.PPPP* abbpcllwww.thocp.net/timeline/1620.htmPPPPxxxHistory of Computer AntiquityPPPP* abbpcllbluemich.net/rechner/PPPPxxxMechanische Rechenhilfsmittel Mechanical Calculating Devices by Wolf G. Blümich (in German.)PPPP* abbpcllwww.madeasy.de/2/mathe.htmPPPPxxxMathematics site by Reiner Hoffmann in German.PPPP* abbpcllwww.opticaliamuseum.com/drawing/PPPPxxxOpticalia Museum - museum menu is working, but the catalogue menu was still under construction in May 2012.PPPP* abbpcllwww.mipaginapersonal.movistar.es/web3/calculating/LLIBRE%20JPG/INDEX%20SOLO.htm#alfaPPPPxxxÍndice de las Máquinas de Calcular a comprehensive survey site by Josep Balsach Peig, in Spanish.PPPP* abbpcllcalmeca.free.fr/calculmecanique_php/index_calmeca.php?lang=engPPPPxxxFrançois Babillot's calculator website PPPPPPVV Manuals and InstructionsPPPP* abbpcllwww.rechenwerkzeug.de/default.htmPPPPxxxCalculator Manuals from Rechenwerkzeug.dePPPP* abbpcllwww.nicolamarras.it/calcolatoria/downloads_en.htmlPPPPxxxCalcolatoria downloadsPPPP* abbpcllwww.mathsinstruments.me.uk/page62.htmlPPPPxxxMathematical Instruments Catalogues and BrochuresPPPP* abbpcllwww.prehistoriadelainformatica.com/manuales-instructions/PPPPxxxPrehistoria de la Informatica Office CollectiblesPPPP* abbpcllusers.lewiston.com/ejorgens/office/miscellaneous/miscellaneous.htmlPPPPxxxMiscellaneous Manuals Pay site, but if you can't get these elsewhere...PPPP* abbpcllofficemachinemanuals.com/catalog/miscellaneous.htmPPPPxxxOffice Machines America Pay site.PPPP* abbpcllwww.mechanicalculator.com/manuals/PPPPxxxCollection of Kees Nagtegaal useful set of manuals for slide rules and the more common calculators.PPPP* abbpcllabbpcllwww.mccoys-kecatalogs.com/KEManuals/manuals.htmPPPPxxxKeuffel & Esser Slide Rule Manuals and Catalogues site by Clark McCoy.PPPPPPVV Specialist websitesPPPP* abbpcllwww.arithmometre.orgPPPPxxxValéry Monnier's extraordinary and expert website on the Thomas de Colmar ArithmometerPPPP* abbpcllwww.ami19.org/Arithmetic MachinesPPPPxxxArithmetical Machines & Instruments / 19th century Valéry Monnier's other set of images and details of some of the most rare and precious calculating machines of the C19 (in French and English). PPPP* abbpcllmortati.com/glusker/elecmech/refslinks.htmPPPPxxxElectromechanical calculating machines from the 1960's includes extensive lists of other relevant links and books.PPPP* abbpcllajmdeman.awardspace.info/PPPPxxxOriginal documents on the History of CalculatorsPPPP* abbpcllwww.yvesserra.fr/PPPPxxxLe cabinet de curiosités d'Yves Serra  A nice presentation of information on early calculators (with particular attention to those of Pascale and Leibnitz).PPPP* abbpcllwww2.cruzio.com/~vagabond/ComptHome.htmlPPPPxxxComptometer Website Very authoritative website on the Felt & Tarrant Comptometer.PPPP* abbpcllwww.vcalc.net/PPPPxxxThe Calculator Reference Comprehensive coverage of abbpcllwww.vcalc.net/cu.htmPPPPxxxCurta, abbpcllwww.vcalc.net/hp.htmPPPPxxxHewlett Packard, and abbpcllwww.vcalc.net/ti.htmPPPPxxxTexas Instrument calculators.  Includes links to other sites and manuals.PPPP* abbpcllhome.comcast.net/~wtodhner/calcs.htmlPPPPxxxWilliam Ohdner's site commemorating the Ohdner calculatorPPPP* abbpcllwww.xnumber.com/xnumber/cmisc_facit_page.htmPPPPxxxFacit Page by James Redin including a comprehensive list of models of the Facit calculators.PPPP* abbpcllwww.xnumber.com/xnumber/facit_history.htmPPPPxxxHistory of the Facit Calculator by Christofer Nöring PPPP* abbpcllwww.taswegian.com/MOSCOW/soviet.htmlPPPPxxxMuseum of Soviet CalculatorsPPPP* abbpcllrk86.com/frolov/calcolle.htmPPPPxxxSoviet Calculators CollectionPPPP* abbpcllofficemachinemanuals.com/PPPPxxxOffice Machines Americana including a useful set of manuals.PPPP* abbpcllwww.calculators.de/PPPPxxxMuseum of Pocket Calculating Devices mainly focussing on electronic pocket calculators.PPPP* https://plus.google.com/photos/103618537816338035609/albums?banner=pwaPPPPxxxJohn Huey's Picasawebalbum with illustrations of a wide range of Addiator Troncet calculators.PPPPPPVV Gunter Scales & SectorsPPPP* abbpcllwww.rainerstumpe.de/HTML/erl01.htmlPPPPxxxGunter Works All about Gunter Scales and Sectors and how to use them (mostly in German but also in part in English)PPPPVV Slide RulesPPPP* abbpcllsliderulemuseum.com/PPPPxxxInternational Slide Rule MuseumPPPP* abbpcllsliderulemuseum.com/HSRC_Menu.htmPPPPxxxHerman van Herwijnen's Slide Rule Catalogue "LITE"PPPP* abbpcllwww.hh.schule.de/metalltechnik-didaktik/museum/rechenschieber/scheiben/rs9.htmPPPPxxxRechenscheiber im Online-MuseumPPPP* abbpcllwww.sliderule.ca/PPPPxxxEric's Slide Rule SitePPPP* abbpcllsliderule.ozmanor.com/index.htmlPPPPxxxGreg's slide rulesPPPP* abbpcllwww.sliderules.infoPPPPxxxRobert Manley's Slide Rule SitePPPP* abbpcllbluemich.net/rechner/rma21.htm#14PPPPxxxAnhang 2.1: Bedienungs- und Serviceanleitungen für Tabellen, Rechenschieber, -scheiben, -walzen und -skalen Instructions for many slide rules.PPPP* abbpclloughtred.org/PPPPxxxThe Oughtred SocietyPPPP* abbpcllsliderules.lovett.com/cookiedev/extendedlitsearch.htmlPPPPxxxScanned back issues of the Oughtred Society Journal and other publications An essential reference site for enthusiasts.  Access to the last five years publications requires a password and username to be provided by the Society.PPPP*abbpcllwww.rekeninstrumenten.nl/index.htmlPPPPxxxDutch Circle for Historical Calculating InstrumentsPPPP* abbpcllwww.hpmuseum.org/sliderul.htmPPPPxxxMuseum of HP Calculators History of Slide RulesPPPP* abbpcllwww.xnumber.com/xnumber/hp.htmPPPPxxxThe Death of the Slide Rule by James RedinPPPP* abbpcllwww.sliderule.it/PPPPxxxCollection of Giovanni BredaPPPP* abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxInternational Slide Rule Museum A survey site focussing primarily on slide rules with a wealth of links and other material including other related sites, and manuals and related material.  See also its helpful and comprehensive abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxlinks page.PPPP* abbpcllwww.svpal.org/~dickel/OK/OtisKing.htmlPPPPxxxOtis King's Patent Calculator Specialist site focussing on the Otis King cylindrical sliderule.PPPP* abbpclllinealis.org/PPPPxxxlinealis.org "Un site consacré aux instruments du calcul manuel tels que les règles et cercles à calcul, les curseurs, abaques, machines à calculer tenant dans la main, planimètres et intégrateurs."  PPPP* abbpcllwww.sphere.bc.ca/test/2archives.htmlPPPPThe Slide Rule Universe by Sphere research corporation.PPPPPPPPfarsome nasty examples of mediaeval torture chambers and dogs and cats and elephants and broils and gorgeous animals of all sorts measuring instruments of all sortsPPPPPPPPPPPPPPPPPP
(:ifend:)

This Ballast seems to enable me to overcome an error in PMWiki on this site which only allows 3 external links unless this amount of text (>10,967 characters including spaces) is present on the page.  It is very weird.  VV Early booksPPPP* John Napier, abbpcllmeta-studies.net/pmwiki/uploads/Books/Rabdologiae_seu_numerationis_per_virgula.pdfPPPPxxxRabdologiae seu numerationis per vigula, 1628 (first published 1617).PPPP* Blaise Pascal, abbpcllwww.bibnum.education.fr/calculinformatique/calcul/la-pascaline-la-«%C2%A0machine-qui-relève-du-défaut-de-la-mémoire%C2%A0»PPPPxxx"Lettre dédicatoire à Monseigneur le Chancelier sur le sujet de la machine nouvellement inventée par le Sieur B.P. pour faire toutes sortes d'opérations d'arithmétique, par un mouvement reglé, sans plume ny jettons avec un advis necessaire à ceux qui auront curiosité de voir ladite machine, & de s'en servir", 1645.PPPP* Jacob Leupold, abbpcllmeta-studies.net/pmwiki/uploads/Books/TheatrumArithmeticoGeometricum.pdfPPPPxxxTheatrum Arithmetico-Geometricum das ist: Schau-Platz der Rechen- und Mess-Kunst. . . . Christoph Zunkel,  Leipzig, 1774 (first edition 1727). The best illustrated book on calculation and measurement published during the eighteenth century.PPPP* abbpcllebooks.library.cornell.edu/m/math/browse/title/a.phpPPPPxxxCornell University Library Historical Math Monographs. A wonderful collection of early mathematics books generally able to be read on line.PPPP* abbpcllwww.bibnum.education.fr/recherche/resultat/liste/PPPPxxxBibnum Classic scientific articles from before 1940 relevant to calculation, mathematics, and information science. Includes original documents from Pascale and Leibniz.PPPPPPVV Key websitesPPPPVV Survey websitesPPPP* abbpcllwww.rechnerlexikon.de/en/artikel/Main_PagePPPPxxxRechnerlexicon The leading and most comprehensive survey site for calculator specialists and collectors with information about almost every known mechanical calculator and a database of more than 23750 patents.PPPP* abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxRechenmaschinen-Illustrated: The most comprehensive listing of details about early calculating machines on the web. Based around the classic study Ernst Martin, '/Die Rechenmaschinen/', 1925, and translated into English as abbpcllwww.rechenmaschinen-illustrated.com/PPPPxxxErnst Martin, "The Calculating Machines", MIT Press and The Charles Babbage Institute, USA, "History of Computing"  series, 1992.PP PP* abbpcllwww.histoire-informatique.org/idx/PPPPxxxHistoire de l'Informatique Wide-ranging gallery of calculators and associated information. [in French] PPPP* abbpcllwww.rechenkasten.de/BueromaschinenLexikon/index.htmlPPPPxxxBüromaschinen Lexikon Published by Goeller-Verlag  the annual office machines dictionary provided a comprehensive illustrated overview of common office equipment for the respective years. This site provides collectors with the information on calculators from that website.[in German]PPPP* abbpcllhome.vicnet.net.au/~wolff/calculators/PPPPxxxJohn Wolff's Web Museum Calculating Machines A wonderfully detailed site by an expert collector with great mechanical insight into the workings of the extensive set of calculators listed.PPPP* abbpcllw1.131.telia.com/~u13101111/typewriters.htmlPPPPxxxSwedish Typewriters Site - listing of antique office calculators From the home page select the "The Collection" in the navigation bar on the left, and then scroll down to the RäKNEMASKINER / CALCULATORS section.PPPP* abbpcllwww.ph-ludwigsburg.de/fileadmin/subsites/2e-imix-t-01/user_files/mmm/mmm_online/PPPPxxxMathematisches Maschinenemuseum Good historical summaries and a nice set of videos of machines in action.PPPP*abbpcllwww.mechrech.infoPPPPxxxBeiträge zur Geschichte des mechanischen Rechnens: Contributions to the History of Mechanical Calculation Good list of publications, books and historical articles dealing in particular with the history and internal workings of calculating machines. PPPP* abbpclled-thelen.org/comp-hist/on-line-docs.htmlPPPPxxxOnline documents A broad listing of useful links to documents covering the history of calculators.PPPP* abbpcllcalcollect.free.fr/machines/macha.htmPPPPxxxMichel Bardel's list Tentative list of all existing mechanical machines since 1820, together with FAQs and serial numbers. An invaluable reference source.PPPP* abbpcllwww.thocp.net/timeline/1620.htmPPPPxxxHistory of Computer AntiquityPPPP* abbpcllbluemich.net/rechner/PPPPxxxMechanische Rechenhilfsmittel Mechanical Calculating Devices by Wolf G. Blümich (in German.)PPPP* abbpcllwww.madeasy.de/2/mathe.htmPPPPxxxMathematics site by Reiner Hoffmann in German.PPPP* abbpcllwww.opticaliamuseum.com/drawing/PPPPxxxOpticalia Museum - museum menu is working, but the catalogue menu was still under construction in May 2012.PPPP* abbpcllwww.mipaginapersonal.movistar.es/web3/calculating/LLIBRE%20JPG/INDEX%20SOLO.htm#alfaPPPPxxxÍndice de las Máquinas de Calcular a comprehensive survey site by Josep Balsach Peig, in Spanish.PPPP* abbpcllcalmeca.free.fr/calculmecanique_php/index_calmeca.php?lang=engPPPPxxxFrançois Babillot's calculator website PPPPPPVV Manuals and InstructionsPPPP* abbpcllwww.rechenwerkzeug.de/default.htmPPPPxxxCalculator Manuals from Rechenwerkzeug.dePPPP* abbpcllwww.nicolamarras.it/calcolatoria/downloads_en.htmlPPPPxxxCalcolatoria downloadsPPPP* abbpcllwww.mathsinstruments.me.uk/page62.htmlPPPPxxxMathematical Instruments Catalogues and BrochuresPPPP* abbpcllwww.prehistoriadelainformatica.com/manuales-instructions/PPPPxxxPrehistoria de la Informatica Office CollectiblesPPPP* abbpcllusers.lewiston.com/ejorgens/office/miscellaneous/miscellaneous.htmlPPPPxxxMiscellaneous Manuals Pay site, but if you can't get these elsewhere...PPPP* abbpcllofficemachinemanuals.com/catalog/miscellaneous.htmPPPPxxxOffice Machines America Pay site.PPPP* abbpcllwww.mechanicalculator.com/manuals/PPPPxxxCollection of Kees Nagtegaal useful set of manuals for slide rules and the more common calculators.PPPP* abbpcllabbpcllwww.mccoys-kecatalogs.com/KEManuals/manuals.htmPPPPxxxKeuffel & Esser Slide Rule Manuals and Catalogues site by Clark McCoy.PPPPPPVV Specialist websitesPPPP* abbpcllwww.arithmometre.orgPPPPxxxValéry Monnier's extraordinary and expert website on the Thomas de Colmar ArithmometerPPPP* abbpcllwww.ami19.org/Arithmetic MachinesPPPPxxxArithmetical Machines & Instruments / 19th century Valéry Monnier's other set of images and details of some of the most rare and precious calculating machines of the C19 (in French and English). PPPP* abbpcllmortati.com/glusker/elecmech/refslinks.htmPPPPxxxElectromechanical calculating machines from the 1960's includes extensive lists of other relevant links and books.PPPP* abbpcllajmdeman.awardspace.info/PPPPxxxOriginal documents on the History of CalculatorsPPPP* abbpcllwww.yvesserra.fr/PPPPxxxLe cabinet de curiosités d'Yves Serra  A nice presentation of information on early calculators (with particular attention to those of Pascale and Leibnitz).PPPP* abbpcllwww2.cruzio.com/~vagabond/ComptHome.htmlPPPPxxxComptometer Website Very authoritative website on the Felt & Tarrant Comptometer.PPPP* abbpcllwww.vcalc.net/PPPPxxxThe Calculator Reference Comprehensive coverage of abbpcllwww.vcalc.net/cu.htmPPPPxxxCurta, abbpcllwww.vcalc.net/hp.htmPPPPxxxHewlett Packard, and abbpcllwww.vcalc.net/ti.htmPPPPxxxTexas Instrument calculators.  Includes links to other sites and manuals.PPPP* abbpcllhome.comcast.net/~wtodhner/calcs.htmlPPPPxxxWilliam Ohdner's site commemorating the Ohdner calculatorPPPP* abbpcllwww.xnumber.com/xnumber/cmisc_facit_page.htmPPPPxxxFacit Page by James Redin including a comprehensive list of models of the Facit calculators.PPPP* abbpcllwww.xnumber.com/xnumber/facit_history.htmPPPPxxxHistory of the Facit Calculator by Christofer Nöring PPPP* abbpcllwww.taswegian.com/MOSCOW/soviet.htmlPPPPxxxMuseum of Soviet CalculatorsPPPP* abbpcllrk86.com/frolov/calcolle.htmPPPPxxxSoviet Calculators CollectionPPPP* abbpcllofficemachinemanuals.com/PPPPxxxOffice Machines Americana including a useful set of manuals.PPPP* abbpcllwww.calculators.de/PPPPxxxMuseum of Pocket Calculating Devices mainly focussing on electronic pocket calculators.PPPP* https://plus.google.com/photos/103618537816338035609/albums?banner=pwaPPPPxxxJohn Huey's Picasawebalbum with illustrations of a wide range of Addiator Troncet calculators.PPPPPPVV Gunter Scales & SectorsPPPP* abbpcllwww.rainerstumpe.de/HTML/erl01.htmlPPPPxxxGunter Works All about Gunter Scales and Sectors and how to use them (mostly in German but also in part in English)PPPPVV Slide RulesPPPP* abbpcllsliderulemuseum.com/PPPPxxxInternational Slide Rule MuseumPPPP* abbpcllsliderulemuseum.com/HSRC_Menu.htmPPPPxxxHerman van Herwijnen's Slide Rule Catalogue "LITE"PPPP* abbpcllwww.hh.schule.de/metalltechnik-didaktik/museum/rechenschieber/scheiben/rs9.htmPPPPxxxRechenscheiber im Online-MuseumPPPP* abbpcllwww.sliderule.ca/PPPPxxxEric's Slide Rule SitePPPP* abbpcllsliderule.ozmanor.com/index.htmlPPPPxxxGreg's slide rulesPPPP* abbpcllwww.sliderules.infoPPPPxxxRobert Manley's Slide Rule SitePPPP* abbpcllbluemich.net/rechner/rma21.htm#14PPPPxxxAnhang 2.1: Bedienungs- und Serviceanleitungen für Tabellen, Rechenschieber, -scheiben, -walzen und -skalen Instructions for many slide rules.PPPP* abbpclloughtred.org/PPPPxxxThe Oughtred SocietyPPPP* abbpcllsliderules.lovett.com/cookiedev/extendedlitsearch.htmlPPPPxxxScanned back issues of the Oughtred Society Journal and other publications An essential reference site for enthusiasts.  Access to the last five years publications requires a password and username to be provided by the Society.PPPP*abbpcllwww.rekeninstrumenten.nl/index.htmlPPPPxxxDutch Circle for Historical Calculating InstrumentsPPPP* abbpcllwww.hpmuseum.org/sliderul.htmPPPPxxxMuseum of HP Calculators History of Slide RulesPPPP* abbpcllwww.xnumber.com/xnumber/hp.htmPPPPxxxThe Death of the Slide Rule by James RedinPPPP* abbpcllwww.sliderule.it/PPPPxxxCollection of Giovanni BredaPPPP* abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxInternational Slide Rule Museum A survey site focussing primarily on slide rules with a wealth of links and other material including other related sites, and manuals and related material.  See also its helpful and comprehensive abbpcllsliderulemuseum.com/SR_Links.htmPPPPxxxlinks page.PPPP* abbpcllwww.svpal.org/~dickel/OK/OtisKing.htmlPPPPxxxOtis King's Patent Calculator Specialist site focussing on the Otis King cylindrical sliderule.PPPP* abbpclllinealis.org/PPPPxxxlinealis.org "Un site consacré aux instruments du calcul manuel tels que les règles et cercles à calcul, les curseurs, abaques, machines à calculer tenant dans la main, planimètres et intégrateurs."  PPPP* abbpcllwww.sphere.bc.ca/test/2archives.htmlPPPPThe Slide Rule Universe by Sphere research corporation.PPPPPPPPfarsome nasty examples of mediaeval torture chambers and dogs and cats and elephants and broils and gorgeous animals of all sorts measuring instruments of all sortsPPPPPPPPPPPPPPPPPP

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